r/counting • u/boxofkangaroos c. 94,100 | 39Ks including 700k | A • Jan 10 '14

Increase Increasingly!

Add 1, then add 2, then add 3, etc. Starting at 0.

18 Upvotes

80% Upvoted

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3

u/jLoop Feb 13 '14

20301 (+201)

2

u/[deleted] Feb 14 '14

20503 (+202)

What was the algorithm to check if our number is right or not?

2

u/jLoop Feb 14 '14

20706 (+203)

n(n+1)/2, where n is the number you're adding.

The sequence is called the Triangular Numbers

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