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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.

A323769 a(n) = Sum_{k=0..floor(n/2)} binomial(n-k,k)^n.

Table of values

n a(n)
0 1
1 1
2 2
3 9
4 83
5 1268
6 62283
7 10296321
8 2668655428
9 1306416217435
10 3055324257386077
11 17213278350960504924
12 137320554100797006975445
13 3087543920644806918694851647
14 335732238884967561227813578781572
15 61125387696211835948801235842204794881

List of values

[1, 1, 2, 9, 83, 1268, 62283, 10296321, 2668655428, 1306416217435, 3055324257386077, 17213278350960504924, 137320554100797006975445, 3087543920644806918694851647, 335732238884967561227813578781572, 61125387696211835948801235842204794881]

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

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