I often have to generate a geometric sequence so I created this simple online utility that does it for me. It lets you generate however many geometric series numbers you need in any base. It works in the browser and is powered by alien technology from the future.
Geometric Progression Generator Options
Geometric Progression Generator Examples (click to try!)
1, 3, 9, 27, 81, 243, 729, 2187, 6561, 19683, 59049, 177147, 531441, 1594323, 4782969, 14348907, 43046721, 129140163, 387420489, 1162261467, 3486784401, 10460353203, 31381059609, 94143178827, 282429536481, 847288609443, 2541865828329, 7625597484987, 22876792454961, 68630377364883, 205891132094649, 617673396283947, 1853020188851841, 5559060566555523, 16677181699666569, 50031545098999707, 150094635296999121, 450283905890997363, 1350851717672992089, 4052555153018976267, 12157665459056928801, 36472996377170786403, 109418989131512359209, 328256967394537077627, 984770902183611232881, 2954312706550833698643, 8862938119652501095929, 26588814358957503287787, 79766443076872509863361, 239299329230617529590083
-1 0.2 -0.04 0.008 -0.0016 0.00032 -0.000064 0.0000128 -0.00000256 0.000000512
a; -a; a; -a; a; -a; a; -a; a; -a; a; -a; a; -a; a; -a; a; -a; a; -a
How Does This Geometric Progression Generator Work?
array and a
for loop. First, it initializes
array with the
starting value, which is specified in the options. Then, it creates a
for loop with the condition to stop when
count (series length; specified in options) members. In the loop, it keeps track of
array's last element, multiplies it by the
ratio (common ratio; specified in options), and adds the new term at the end of
array by using the
array.push() function. To work with large numbers, it uses the
bignumber.js library and all multiplication operations are performed by bignumber's
times() function. When the loop ends, it
toString(base) function to convert series terms into
base (specified in options). After this, it
array.join()s all terms with the
separator value (sequence value separator; also specified in the options).
Created by Browserling
This geometric progression generator was created by me and my team at Browserling. Behind the scenes, it's actually powered by Browserling's programmer tools that are used by millions of people every month. Browserling itself is an online cross-browser testing service powered by alien technology. Check it out!
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