Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0.
A264486
Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0.
Terms
- a(0) =1a(1) =10a(2) =36a(3) =212a(4) =2144a(5) =9714a(6) =92052a(7) =581575a(8) =4510937a(9) =31398740a(10) =236553733a(11) =1681262954a(12) =12489549989a(13) =90270132471a(14) =663622115288
External references
- oeis: A264486