Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,0 0,1 1,0 -1,-2 or 0,2.
A264308
Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,0 0,1 1,0 -1,-2 or 0,2.
Terms
- a(0) =20a(1) =139a(2) =1032a(3) =7821a(4) =58589a(5) =440001a(6) =3303761a(7) =24804389a(8) =186235917a(9) =1398284827a(10) =10498514008a(11) =78824309712a(12) =591823863505
External references
- oeis: A264308