cp's OEIS Frontend

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.

A343665 Number of partitions of an n-set without blocks of size 5.

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 15
5 51
6 197
7 835
8 3860
9 19257
10 102997
11 586170
12 3535645
13 22496437
14 150454918
15 1054235150
16 7718958995
17 58905868192
18 467530598983
19 3851775136517
20 32881385742460
21 290387471713872
22 2649226725182823
23 24934118754400767
24 241809265181914545
25 2413608066257526577

List of values

[1, 1, 2, 5, 15, 51, 197, 835, 3860, 19257, 102997, 586170, 3535645, 22496437, 150454918, 1054235150, 7718958995, 58905868192, 467530598983, 3851775136517, 32881385742460, 290387471713872, 2649226725182823, 24934118754400767, 241809265181914545, 2413608066257526577]

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

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