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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.

A367528 The number of ways of tiling the n X n grid up to diagonal and antidiagonal reflections by a tile that is fixed under 180-degree rotations but is not fixed under either reflection.

Table of values

n a(n)
1 1
2 5
3 136
4 16448
5 8390656
6 17179934720
7 140737496743936
8 4611686019501129728
9 604462909807864343166976
10 316912650057057631849152512000
11 664613997892457937028364282443595776
12 5575186299632655785385110159782807787798528
13 187072209578355573530071668259090783432992763150336

List of values

[1, 5, 136, 16448, 8390656, 17179934720, 140737496743936, 4611686019501129728, 604462909807864343166976, 316912650057057631849152512000, 664613997892457937028364282443595776, 5575186299632655785385110159782807787798528, 187072209578355573530071668259090783432992763150336]

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

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