A215291 - cp's OEIS frontend

A215291 Number of permutations of 0..floor((n*7-1)/2) on even squares of an nX7 array such that each row and column of even squares is increasing.

n	a(n)
1	1
2	35
3	2310
4	210210
5	42882840
6	5703417720
7	2061378118800
8	337653735859440
9	173457547735792320
10	32436561426593163840
11	21174123919831066023840
12	4340695403565368534887200
13	3373030378241974592216989200

[1, 35, 2310, 210210, 42882840, 5703417720, 2061378118800, 337653735859440, 173457547735792320, 32436561426593163840, 21174123919831066023840, 4340695403565368534887200, 3373030378241974592216989200]

cp's OEIS Frontend

A215291 Number of permutations of 0..floor((n*7-1)/2) on even squares of an nX7 array such that each row and column of even squares is increasing.

Table of values

List of values