Number of nX5 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, and 4 in the lower right corner.
A164751
Number of nX5 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, and 4 in the lower right corner.
Terms
- a(0) =96a(1) =3576a(2) =66970a(3) =920072a(4) =10521134a(5) =106357664a(6) =983760734a(7) =8508516160a(8) =69824478502
External references
- oeis: A164751