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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.

A365527 a(n) = Sum_{k=0..floor((n-2)/4)} Stirling2(n,4*k+2).

Table of values

n a(n)
0 0
1 0
2 1
3 3
4 7
5 15
6 32
7 84
8 393
9 2901
10 23339
11 180565
12 1327404
13 9364732
14 64197317
15 433372411
16 2928720335
17 20264399483
18 147807954692
19 1170622475408
20 10229966924581
21 97922117830589
22 1001744359476291
23 10661002700183905
24 115706501336004984

List of values

[0, 0, 1, 3, 7, 15, 32, 84, 393, 2901, 23339, 180565, 1327404, 9364732, 64197317, 433372411, 2928720335, 20264399483, 147807954692, 1170622475408, 10229966924581, 97922117830589, 1001744359476291, 10661002700183905, 115706501336004984]

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

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