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.

A333900 Number of nonequivalent n X n binary matrices with 4 ones in every row and column up to permutation of rows.

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 1
5 1
6 130
7 16700
8 3330915
9 957659906
10 382304435016
11 204772106834160
12 143299238797934175
13 128179127293763395905
14 143868740984351881041401
15 199438057945979365292917046
16 336793287548313747690192184440
17 684521312346990661869780271166300

List of values

[1, 0, 0, 0, 1, 1, 130, 16700, 3330915, 957659906, 382304435016, 204772106834160, 143299238797934175, 128179127293763395905, 143868740984351881041401, 199438057945979365292917046, 336793287548313747690192184440, 684521312346990661869780271166300]

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

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