A215295 - cp's OEIS frontend

A215295 Number of permutations of 0..floor((n*5-2)/2) on odd squares of an nX5 array such that each row and column of odd squares is increasing.

n	a(n)
1	1
2	10
3	70
4	2100
5	23100
6	1051050
7	14294280
8	814773960
9	12547518984
10	824551247520
11	13781785137120
12	999179422441200
13	17699749768958400
14	1379105502831342000
15	25513451802379827000
16	2100607531729272423000
17	40191624107086745693400

[1, 10, 70, 2100, 23100, 1051050, 14294280, 814773960, 12547518984, 824551247520, 13781785137120, 999179422441200, 17699749768958400, 1379105502831342000, 25513451802379827000, 2100607531729272423000, 40191624107086745693400]

cp's OEIS Frontend

A215295 Number of permutations of 0..floor((n*5-2)/2) on odd squares of an nX5 array such that each row and column of odd squares is increasing.

Table of values

List of values