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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.

A295223 Number of tilings of the n X n torus, using diagonal lines to connect the gridpoints.

Table of values

n a(n)
1 1
2 4
3 18
4 669
5 170440
6 238773358
7 1436110601256
8 36028800332480074
9 3731252530927004638384
10 1584563250286480205777197264
11 2746338834266357074512496613490144
12 19358285762613388151183577985346072926384
13 553468075675608205710323628035216140349636855680

List of values

[1, 4, 18, 669, 170440, 238773358, 1436110601256, 36028800332480074, 3731252530927004638384, 1584563250286480205777197264, 2746338834266357074512496613490144, 19358285762613388151183577985346072926384, 553468075675608205710323628035216140349636855680]

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

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