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.

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.

Terms

    a(0) =1a(1) =10a(2) =70a(3) =2100a(4) =23100a(5) =1051050a(6) =14294280a(7) =814773960a(8) =12547518984a(9) =824551247520

External references