A215866 - cp's OEIS frontend

A215866 Number of permutations of 0..floor((n*6-2)/2) on odd squares of an n X 6 array such that each row, column, diagonal and (downwards) antidiagonal of odd squares is increasing.

n	a(n)
1	1
2	5
3	12
4	78
5	189
6	1233
7	2988
8	19494
9	47241
10	308205
11	746892
12	4872798
13	11808549
14	77040153
15	186696108
16	1218024054
17	2951712081
18	19257264405
19	46667304972
20	304462158318
21	737821743309
22	4813622739873
23	11665145978028
24	76104577363014

[1, 5, 12, 78, 189, 1233, 2988, 19494, 47241, 308205, 746892, 4872798, 11808549, 77040153, 186696108, 1218024054, 2951712081, 19257264405, 46667304972, 304462158318, 737821743309, 4813622739873, 11665145978028, 76104577363014]

cp's OEIS Frontend

A215866 Number of permutations of 0..floor((n*6-2)/2) on odd squares of an n X 6 array such that each row, column, diagonal and (downwards) antidiagonal of odd squares is increasing.

Table of values

List of values