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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.

A189656 Number of 8 X n array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.

Table of values

n a(n)
1 1
2 23409
3 9648721
4 39401919001
5 74192202677913
6 211788908613601649
7 517069529154777840681
8 1369385680210307625221600
9 3514075326766461571852637721
10 9167946522672764796730050799825

List of values

[1, 23409, 9648721, 39401919001, 74192202677913, 211788908613601649, 517069529154777840681, 1369385680210307625221600, 3514075326766461571852637721, 9167946522672764796730050799825]

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

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