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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.

A206158 a(n) = Sum_{k=0..n} binomial(n,k)^(2*k+1).

Table of values

n a(n)
0 1
1 2
2 10
3 272
4 24226
5 12053252
6 40086916024
7 429254371605824
8 23527609330364490754
9 10714627376371224032350052
10 16964729291782419425708732425300
11 109783535843179466164398767001178968704
12 6782057095273243388704415924996348722446049600

List of values

[1, 2, 10, 272, 24226, 12053252, 40086916024, 429254371605824, 23527609330364490754, 10714627376371224032350052, 16964729291782419425708732425300, 109783535843179466164398767001178968704, 6782057095273243388704415924996348722446049600]

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

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