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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.

A365526 a(n) = Sum_{k=0..floor((n-1)/4)} Stirling2(n,4*k+1).

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 1
5 2
6 16
7 141
8 1051
9 6953
10 42571
11 247886
12 1401676
13 7868005
14 45210257
15 277899961
16 1917140421
17 15186484134
18 135259346092
19 1295096363273
20 12821558136891
21 128268683204737
22 1283599391456735
23 12817818177339530
24 127998022119881272

List of values

[0, 1, 1, 1, 1, 2, 16, 141, 1051, 6953, 42571, 247886, 1401676, 7868005, 45210257, 277899961, 1917140421, 15186484134, 135259346092, 1295096363273, 12821558136891, 128268683204737, 1283599391456735, 12817818177339530, 127998022119881272]

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

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