Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,1 0,-1 -2,0 or 1,1.

A264880

Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,1 0,-1 -2,0 or 1,1.

Terms

    a(0) =1a(1) =0a(2) =5a(3) =4a(4) =65a(5) =228a(6) =1101a(7) =4832a(8) =18501a(9) =79088a(10) =306617a(11) =1273740a(12) =5039669a(13) =20532112a(14) =82109789a(15) =331870404a(16) =1333905993a(17) =5375261200a(18) =21637089445a(19) =87118807544a(20) =350809834405

External references