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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.

A357902 a(n) = Sum_{k=0..floor(n/4)} |Stirling1(n - 3*k,k)|.

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 1
5 1
6 2
7 6
8 25
9 123
10 731
11 5090
12 40595
13 364650
14 3641903
15 40026609
16 480029801
17 6237662582
18 87298953249
19 1309161984315
20 20942605407386
21 355971044728635
22 6406714801013007
23 121715861296354116
24 2434125806029297550
25 51113325326999860554
26 1124432395936987325868

List of values

[1, 0, 0, 0, 1, 1, 2, 6, 25, 123, 731, 5090, 40595, 364650, 3641903, 40026609, 480029801, 6237662582, 87298953249, 1309161984315, 20942605407386, 355971044728635, 6406714801013007, 121715861296354116, 2434125806029297550, 51113325326999860554, 1124432395936987325868]

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

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