Number of (n+1) X (1+1) arrays of permutations of 0..n*2+1 with each element having directed index change -2,0 -1,0 0,-1 or 1,1.
A264622
Number of (n+1) X (1+1) arrays of permutations of 0..n*2+1 with each element having directed index change -2,0 -1,0 0,-1 or 1,1.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =1a(4) =1a(5) =4a(6) =6a(7) =5a(8) =7a(9) =15a(10) =21a(11) =23a(12) =34a(13) =58a(14) =80a(15) =101a(16) =149a(17) =230a(18) =319a(19) =431a(20) =629a(21) =928a(22) =1299a(23) =1810a(24) =2617a(25) =3784a(26) =5336a(27) =7536a(28) =10828a(29) =15521
External references
- oeis: A264622