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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.

A345876 a(n) = Sum_{k=0..n} binomial(2*n, n-k) * k^n.

Table of values

n a(n)
0 1
1 1
2 8
3 90
4 1408
5 28350
6 697344
7 20264244
8 679313408
9 25805186550
10 1095482736640
11 51397070440716
12 2640925289349120
13 147491783753286700
14 8895880971425939456
15 576279075821454657000
16 39905347440408027725824
17 2941534126495441574472870
18 229966392623413457628168192

List of values

[1, 1, 8, 90, 1408, 28350, 697344, 20264244, 679313408, 25805186550, 1095482736640, 51397070440716, 2640925289349120, 147491783753286700, 8895880971425939456, 576279075821454657000, 39905347440408027725824, 2941534126495441574472870, 229966392623413457628168192]

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

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