Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302949
Number of nX4 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =2a(1) =46a(2) =519a(3) =6531a(4) =80589a(5) =998670a(6) =12365841a(7) =153141597a(8) =1896492042a(9) =23486107930a(10) =290851104799
External references
- oeis: A302949