A215786 - cp's OEIS frontend

A215786 Number of permutations of 0..floor((n*8-1)/2) on even squares of an nX8 array such that each row, column, diagonal and (downwards) antidiagonal of even squares is increasing.

n	a(n)
1	1
2	5
3	110
4	932
5	26451
6	234217
7	6812794
8	60485308
9	1761748159
10	15643423061
11	455678075546
12	4046220880948
13	117863060852067
14	1046572601513969
15	30485799411892266
16	270700616010831020
17	7885286478349158743

[1, 5, 110, 932, 26451, 234217, 6812794, 60485308, 1761748159, 15643423061, 455678075546, 4046220880948, 117863060852067, 1046572601513969, 30485799411892266, 270700616010831020, 7885286478349158743]

cp's OEIS Frontend

A215786 Number of permutations of 0..floor((n*8-1)/2) on even squares of an nX8 array such that each row, column, diagonal and (downwards) antidiagonal of even squares is increasing.

Table of values

List of values