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.

A000519 Number of equivalence classes of nonzero regular 0-1 matrices of order n.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 7
6 18
7 43
8 313
9 7525
10 846992
11 324127859
12 403254094631
13 1555631972009429
14 19731915624463099552
15 791773335030637885025287
16 107432353216118868234728540267
17 47049030539260648478475949282317451
18 71364337698829887974206671525372672234854

List of values

[1, 2, 3, 5, 7, 18, 43, 313, 7525, 846992, 324127859, 403254094631, 1555631972009429, 19731915624463099552, 791773335030637885025287, 107432353216118868234728540267, 47049030539260648478475949282317451, 71364337698829887974206671525372672234854]

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

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