Number of nX6 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303312
Number of nX6 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =13a(1) =13a(2) =67a(3) =128a(4) =410a(5) =1221a(6) =3453a(7) =10223a(8) =30247a(9) =88071a(10) =257997a(11) =758575a(12) =2222443a(13) =6510901a(14) =19099863a(15) =56003627a(16) =164158635a(17) =481322825a(18) =1411283805a(19) =4137560893a(20) =12130815503a(21) =35567022201a(22) =104278542849a(23) =305732562651a(24) =896380484697
External references
- oeis: A303312