A215869 - cp's OEIS frontend

A215869 Number of permutations of 0..floor((n*9-2)/2) on odd squares of an nX9 array such that each row, column, diagonal and (downwards) antidiagonal of odd squares is increasing.

n	a(n)
1	1
2	14
3	290
4	11694
5	307874
6	14296434
7	386699176
8	18255280444
9	494952307400
10	23397688110992
11	634501639410480
12	29997930933948284
13	813501010455768664
14	38461009542931961924
15	1043008988814913191696
16	49311812528326463481148

[1, 14, 290, 11694, 307874, 14296434, 386699176, 18255280444, 494952307400, 23397688110992, 634501639410480, 29997930933948284, 813501010455768664, 38461009542931961924, 1043008988814913191696, 49311812528326463481148]

cp's OEIS Frontend

A215869 Number of permutations of 0..floor((n*9-2)/2) on odd squares of an nX9 array such that each row, column, diagonal and (downwards) antidiagonal of odd squares is increasing.

Table of values

List of values