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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.

A331794 a(n) = Sum_{k=0..n} n^k * binomial(n+1,k) * binomial(n+1,k+1).

Table of values

n a(n)
0 1
1 4
2 33
3 400
4 6285
5 120456
6 2714173
7 70129984
8 2040655401
9 65956468600
10 2342384363561
11 90607200956064
12 3789863084012629
13 170370561866229648
14 8188781210421259365
15 418938023982360898816
16 22724122083014879989905
17 1302374806940392958470104

List of values

[1, 4, 33, 400, 6285, 120456, 2714173, 70129984, 2040655401, 65956468600, 2342384363561, 90607200956064, 3789863084012629, 170370561866229648, 8188781210421259365, 418938023982360898816, 22724122083014879989905, 1302374806940392958470104]

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

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