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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.

A189002 Number of domino tilings of the n X n grid with upper left corner removed iff n is odd.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 36
5 192
6 6728
7 100352
8 12988816
9 557568000
10 258584046368
11 32565539635200
12 53060477521960000
13 19872369301840986112
14 112202208776036178000000
15 126231322912498539682594816
16 2444888770250892795802079170816
17 8326627661691818545121844900397056

List of values

[1, 1, 2, 4, 36, 192, 6728, 100352, 12988816, 557568000, 258584046368, 32565539635200, 53060477521960000, 19872369301840986112, 112202208776036178000000, 126231322912498539682594816, 2444888770250892795802079170816, 8326627661691818545121844900397056]

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

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