Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,1 0,-2 1,0 or -1,0.
A264301
Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,1 0,-2 1,0 or -1,0.
Terms
- a(0) =0a(1) =9a(2) =8a(3) =24a(4) =177a(5) =288a(6) =944a(7) =4209a(8) =9944a(9) =31600a(10) =113089a(11) =312608a(12) =983848a(13) =3234633a(14) =9575536a(15) =29951792a(16) =95173345a(17) =289918848a(18) =903912384a(19) =2833959393a(20) =8735891856a(21) =27192328832a(22) =84804247873a(23) =262692360640a(24) =817037308944
External references
- oeis: A264301