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.

A333736 Number of non-isomorphic n X n nonnegative integer matrices with all row and column sums equal to 5 up to permutations of rows and columns.

Table of values

n a(n)
0 1
1 1
2 3
3 13
4 106
5 1856
6 65481
7 3925518
8 363749095
9 48962187281
10 9168714763163
11 2310658842185472
12 762989388539984938
13 322853634364149927118
14 171803197981333555941746
15 113132136587981136905043170
16 90904234140548490596254230897

List of values

[1, 1, 3, 13, 106, 1856, 65481, 3925518, 363749095, 48962187281, 9168714763163, 2310658842185472, 762989388539984938, 322853634364149927118, 171803197981333555941746, 113132136587981136905043170, 90904234140548490596254230897]

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

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