Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 1,1 2,2 -1,0 or 0,-1.
A264650
Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 1,1 2,2 -1,0 or 0,-1.
Terms
- a(0) =0a(1) =4a(2) =4a(3) =22a(4) =65a(5) =193a(6) =628a(7) =1905a(8) =5929a(9) =18406a(10) =56934a(11) =176612a(12) =547378a(13) =1696245a(14) =5258441a(15) =16296976a(16) =50513593a(17) =156566213a(18) =485271504a(19) =1504098056a(20) =4661921212a(21) =14449556758a(22) =44786187665a(23) =138814082217a(24) =430252144356
External references
- oeis: A264650