Number of nX3 array permutations with each element moving zero or one space diagonally, horizontally or vertically.
A189306
Number of nX3 array permutations with each element moving zero or one space diagonally, horizontally or vertically.
Terms
- a(0) =3a(1) =73a(2) =960a(3) =14714a(4) =216708a(5) =3224934a(6) =47862876a(7) =710856569a(8) =10555661105a(9) =156750811549
External references
- oeis: A189306