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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.

A300176 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

Table of values

n a(n)
1 1
2 8
3 255
4 32321
5 16288960
6 32640586945
7 260070240849459
8 8239275981240122104
9 1037894641315598870418625
10 519856344665932729699372254283
11 1035331146709687346593709910443435692

List of values

[1, 8, 255, 32321, 16288960, 32640586945, 260070240849459, 8239275981240122104, 1037894641315598870418625, 519856344665932729699372254283, 1035331146709687346593709910443435692]

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

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