Number of nX3 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303035
Number of nX3 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =3a(1) =11a(2) =14a(3) =35a(4) =71a(5) =186a(6) =459a(7) =1287a(8) =3490a(9) =9699a(10) =27707a(11) =79358a(12) =229491a(13) =669203a(14) =1958414a(15) =5753843a(16) =16951391a(17) =50026322a(18) =147861435a(19) =437469791a(20) =1295219194a(21) =3836957139a(22) =11370949011a(23) =33707274678a(24) =99940712835a(25) =296363420843a(26) =878924723910
External references
- oeis: A303035