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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.

A357828 a(n) = Sum_{k=0..floor(n/3)} |Stirling1(n,3*k)|.

Table of values

n a(n)
0 1
1 0
2 0
3 1
4 6
5 35
6 226
7 1645
8 13454
9 122661
10 1236018
11 13656951
12 164290182
13 2138379243
14 29949509226
15 449188719525
16 7183702249542
17 122039922034485
18 2194928052851898
19 41666342509646127
20 832547791827455886
21 17466905709043534107
22 383908421683657311714

List of values

[1, 0, 0, 1, 6, 35, 226, 1645, 13454, 122661, 1236018, 13656951, 164290182, 2138379243, 29949509226, 449188719525, 7183702249542, 122039922034485, 2194928052851898, 41666342509646127, 832547791827455886, 17466905709043534107, 383908421683657311714]

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

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