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.

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.

Terms

    a(0) =1a(1) =35a(2) =2310a(3) =210210a(4) =42882840a(5) =5703417720

External references