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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.

A373869 a(n) = Sum_{k=1..n} k! * k^(n-3) * Stirling1(n,k).

Table of values

n a(n)
0 0
1 1
2 0
3 2
4 26
5 674
6 28894
7 1848216
8 165229560
9 19698788448
10 3022496261616
11 580460752264656
12 136441193196585408
13 38540172064949405616
14 12883204327833557091984
15 5030833813902039858261504
16 2269484487197629285690675584
17 1171368942033975021150888242304

List of values

[0, 1, 0, 2, 26, 674, 28894, 1848216, 165229560, 19698788448, 3022496261616, 580460752264656, 136441193196585408, 38540172064949405616, 12883204327833557091984, 5030833813902039858261504, 2269484487197629285690675584, 1171368942033975021150888242304]

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

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