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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.

A088437 Number of n X n orthogonal matrices over GF(2) modulo permutations of rows.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 6
6 32
7 288
8 4608
9 130560
10 6684672
11 621674496
12 106099113984
13 33421220904960
14 19556188689530880
15 21359269286705627136
16 43743783499173124374528
17 168632285389312394463805440
18 1227942828363775231508883701760
19 16941927202935006869128068433182720
20 444122456468619444070070837134825095168

List of values

[1, 1, 1, 2, 6, 32, 288, 4608, 130560, 6684672, 621674496, 106099113984, 33421220904960, 19556188689530880, 21359269286705627136, 43743783499173124374528, 168632285389312394463805440, 1227942828363775231508883701760, 16941927202935006869128068433182720, 444122456468619444070070837134825095168]

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

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