Number of 7Xn 0..1 arrays with every element equal to 0, 1 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302169
Number of 7Xn 0..1 arrays with every element equal to 0, 1 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =64a(1) =86a(2) =111a(3) =361a(4) =621a(5) =1563a(6) =2853a(7) =7306a(8) =12963a(9) =33522a(10) =61775a(11) =157788a(12) =293072a(13) =746806a(14) =1414502a(15) =3560709a(16) =6821117a(17) =17041351a(18) =33109869a(19) =81878009a(20) =160823108a(21) =394307941a(22) =783258522a(23) =1903510955a(24) =3817195020a(25) =9202579162a(26) =18623741941a(27) =44557228577
External references
- oeis: A302169