Number of (2+1) X (n+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,0 0,1 1,0 -1,0 or 0,-2.
A264219
Number of (2+1) X (n+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,0 0,1 1,0 -1,0 or 0,-2.
Terms
- a(0) =9a(1) =96a(2) =623a(3) =3736a(4) =24908a(5) =163505a(6) =1056337a(7) =6877345a(8) =44814952a(9) =291509085a(10) =1896866692a(11) =12346072740a(12) =80344855605a(13) =522859320079
External references
- oeis: A264219