A215293 - cp's OEIS frontend

A215293 Number of permutations of 0..floor((n*n-2)/2) on odd squares of an n X n array such that each row and column of odd squares is increasing.

n	a(n)
1	1
2	2
3	6
4	280
5	23100
6	85765680
7	577185873264
8	346915095471584640
9	381134230556959188429120
10	62144711688730139887005809020800
11	18592619468814454675301397184588597886400
12	1236552808693429892089668394551052130596983991526400
13	151213938214745201135492692441902799026853717717324113365952000

[1, 2, 6, 280, 23100, 85765680, 577185873264, 346915095471584640, 381134230556959188429120, 62144711688730139887005809020800, 18592619468814454675301397184588597886400, 1236552808693429892089668394551052130596983991526400, 151213938214745201135492692441902799026853717717324113365952000]

cp's OEIS Frontend

A215293 Number of permutations of 0..floor((n*n-2)/2) on odd squares of an n X n array such that each row and column of odd squares is increasing.

Table of values

List of values