Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302456
Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =13a(2) =8a(3) =10a(4) =54a(5) =111a(6) =276a(7) =1050a(8) =3589a(9) =12072a(10) =43194a(11) =154851a(12) =551019a(13) =1973047a(14) =7081628a(15) =25392279a(16) =91083444a(17) =326896708a(18) =1173197125a(19) =4210409234a(20) =15111648970a(21) =54238806035a(22) =194673096964a(23) =698722708994
External references
- oeis: A302456