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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.

A122486 a(n) = Sum_{k=0..n} |Stirling1(n,k)|*Bell(k)^2.

Table of values

n a(n)
0 1
1 1
2 5
3 39
4 425
5 6053
6 107735
7 2321469
8 59152987
9 1750362419
10 59286010621
11 2271617296347
12 97502863649141
13 4649359584613201
14 244550369307356039
15 14101227268075911837
16 886551391533830227267
17 60482082002935189216499

List of values

[1, 1, 5, 39, 425, 6053, 107735, 2321469, 59152987, 1750362419, 59286010621, 2271617296347, 97502863649141, 4649359584613201, 244550369307356039, 14101227268075911837, 886551391533830227267, 60482082002935189216499]

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

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