Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change -1,1 -1,2 1,0 or 0,-1.
A264552
Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change -1,1 -1,2 1,0 or 0,-1.
Terms
- a(0) =0a(1) =5a(2) =16a(3) =36a(4) =172a(5) =764a(6) =2728a(7) =9880a(8) =38818a(9) =150536a(10) =567680a(11) =2152907a(12) =8249172a(13) =31505782a(14) =119890865a(15) =456906182a(16) =1743546208a(17) =6648727988a(18) =25342679205a(19) =96627142521a(20) =368474752553
External references
- oeis: A264552