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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.

A181191 Number of n X n matrices containing a permutation of 1..n*n in increasing order rowwise, columnwise, diagonally and (downwards) antidiagonally.

Table of values

n a(n)
1 1
2 1
3 4
4 169
5 141696
6 3777546912
7 4673805856338368
8 368253691037579094795185
9 2426023001499238992505630883146240
10 1697356437632520242875237327471631991584394752
11 156101219875805260212264222801658705937606174957553142873088

List of values

[1, 1, 4, 169, 141696, 3777546912, 4673805856338368, 368253691037579094795185, 2426023001499238992505630883146240, 1697356437632520242875237327471631991584394752, 156101219875805260212264222801658705937606174957553142873088]

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

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