Number of (n+1) X (2+1) arrays of permutations of 0..n*3+2 with each element having index change (+-,+-) 0,0 1,2 or 1,0.

A263999

Number of (n+1) X (2+1) arrays of permutations of 0..n*3+2 with each element having index change (+-,+-) 0,0 1,2 or 1,0.

Terms

    a(0) =18a(1) =99a(2) =925a(3) =7304a(4) =62101a(5) =516117a(6) =4331090a(7) =36234055a(8) =303517857a(9) =2541399696a(10) =21283031073a(11) =178225556041

External references