Number of (n+1) X (4+1) arrays of permutations of 0..n*5+4 with each element having directed index change -1,-1 1,0 -1,-2 -2,-2 or 0,1.
A264672
Number of (n+1) X (4+1) arrays of permutations of 0..n*5+4 with each element having directed index change -1,-1 1,0 -1,-2 -2,-2 or 0,1.
Terms
- a(0) =1a(1) =29a(2) =123a(3) =890a(4) =6851a(5) =43131a(6) =291315a(7) =1980287a(8) =13199209a(9) =88670692a(10) =595721002a(11) =3995710025a(12) =26820625288a(13) =180019819900
External references
- oeis: A264672