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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.

A349640 a(n) = Sum_{k=0..n} binomial(n,k) * A000108(k) * k!.

Table of values

n a(n)
0 1
1 2
2 7
3 46
4 485
5 7066
6 130987
7 2946182
8 77923561
9 2369742130
10 81467904431
11 3124302688222
12 132237820201357
13 6123150708289226
14 307903794151741075
15 16709463201832993846
16 973385368533058021457
17 60583668821975488285282
18 4012342371757905842648791
19 281735471040327667890013070

List of values

[1, 2, 7, 46, 485, 7066, 130987, 2946182, 77923561, 2369742130, 81467904431, 3124302688222, 132237820201357, 6123150708289226, 307903794151741075, 16709463201832993846, 973385368533058021457, 60583668821975488285282, 4012342371757905842648791, 281735471040327667890013070]

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

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