Number of 3Xn array permutations with each element moving zero or one space horizontally or diagonally.
A189451
Number of 3Xn array permutations with each element moving zero or one space horizontally or diagonally.
Terms
- a(0) =1a(1) =13a(2) =80a(3) =666a(4) =5080a(5) =40106a(6) =313136a(7) =2455013a(8) =19221095a(9) =150562121a(10) =1179185280a(11) =9235771513a(12) =72336253737a(13) =566554489205
External references
- oeis: A189451