Number of 5Xn 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302531
Number of 5Xn 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =61a(2) =497a(3) =902a(4) =3683a(5) =23909a(6) =128242a(7) =465323a(8) =1918153a(9) =10153650a(10) =48825739a(11) =206962001a(12) =913773720a(13) =4366054069a(14) =20367538805a(15) =90798363146a(16) =409867362675
External references
- oeis: A302531