Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change -1,-1 1,0 -1,-2 -2,-2 or 0,1.
A264678
Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change -1,-1 1,0 -1,-2 -2,-2 or 0,1.
Terms
- a(0) =0a(1) =9a(2) =34a(3) =123a(4) =748a(5) =3698a(6) =17443a(7) =84737a(8) =414665a(9) =2005125a(10) =9713004a(11) =47127519a(12) =228570355a(13) =1108064547a(14) =5372882058a(15) =26053821399a(16) =126333862510a(17) =612577288197
External references
- oeis: A264678