Number of (n+1)X(2+1) arrays of permutations of 0..n*3+2 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0.
A264485
Number of (n+1)X(2+1) arrays of permutations of 0..n*3+2 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0.
Terms
- a(0) =1a(1) =1a(2) =12a(3) =16a(4) =214a(5) =324a(6) =2960a(7) =6442a(8) =42656a(9) =113575a(10) =636361a(11) =1918550a(12) =9612512a(13) =31689325a(14) =147107038a(15) =515046002a(16) =2273096344a(17) =8287463026a(18) =35352586169a(19) =132498950637a(20) =552353463562
External references
- oeis: A264485