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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.

A189648 Number of nX7 array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.

Table of values

n a(n)
1 21
2 24577
3 11047585
4 6156828073
5 3292827578005
6 1778231752192145
7 958681588788944613
8 517069529154777840681
9 278864582730126081862829
10 150399411952876520217908417
11 81114338143785708962035111845

List of values

[21, 24577, 11047585, 6156828073, 3292827578005, 1778231752192145, 958681588788944613, 517069529154777840681, 278864582730126081862829, 150399411952876520217908417, 81114338143785708962035111845]

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

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