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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.

A211211 sum( C(n+1,k)*|S1(n,k)|, k=0..n). Binomial convolution of the Stirling numbers of the first kind.

Table of values

n a(n)
0 1
1 2
2 6
3 30
4 205
5 1750
6 17766
7 207942
8 2746815
9 40315858
10 649688072
11 11387466948
12 215440517656
13 4371810051908
14 94649397546302
15 2176321870192342
16 52938365091640943
17 1357592080006964806
18 36593629200726397630
19 1033979281229140895582
20 30552322294916306960625

List of values

[1, 2, 6, 30, 205, 1750, 17766, 207942, 2746815, 40315858, 649688072, 11387466948, 215440517656, 4371810051908, 94649397546302, 2176321870192342, 52938365091640943, 1357592080006964806, 36593629200726397630, 1033979281229140895582, 30552322294916306960625]

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

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