cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A129440 a(0)=0, a(1)=1, a(2)=5 and for n>2: a(n) = a(n-1)*(a(n-1) + 1)*(2*a(n-1) + 1)/6.

Table of values

n a(n)
0 0
1 1
2 5
3 55
4 56980
5 61667666167030
6 78172010815921069181209893626754427513955

List of values

[0, 1, 5, 55, 56980, 61667666167030, 78172010815921069181209893626754427513955]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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