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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.

A362352 a(n) = n! * Sum_{k=0..floor(n/4)} (k/24)^k / (k! * (n-4*k)!).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 6
6 16
7 36
8 211
9 1387
10 6511
11 23431
12 225721
13 2207921
14 14610597
15 71848141
16 958259121
17 12403693681
18 105819536881
19 659686502257
20 11235532306021
21 180826378073461
22 1888306425160541
23 14256573124903341
24 295428115205647117
25 5683724892725141901

List of values

[1, 1, 1, 1, 2, 6, 16, 36, 211, 1387, 6511, 23431, 225721, 2207921, 14610597, 71848141, 958259121, 12403693681, 105819536881, 659686502257, 11235532306021, 180826378073461, 1888306425160541, 14256573124903341, 295428115205647117, 5683724892725141901]

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

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