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.

A318402 Number of sets of nonempty sets whose multiset union is a strongly normal multiset of size n.

Table of values

n a(n)
1 1
2 2
3 6
4 20
5 74
6 311
7 1401
8 6913
9 36376
10 205421
11 1228288
12 7786802
13 51937607
14 364250763
15 2673314121
16 20504809133
17 163844631872
18 1361874185139
19 11748149246269
20 105029750531640
21 971403871953460
22 9282643841237360
23 91519776792040324
24 929892817423282068
25 9725646244888190337

List of values

[1, 2, 6, 20, 74, 311, 1401, 6913, 36376, 205421, 1228288, 7786802, 51937607, 364250763, 2673314121, 20504809133, 163844631872, 1361874185139, 11748149246269, 105029750531640, 971403871953460, 9282643841237360, 91519776792040324, 929892817423282068, 9725646244888190337]

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

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