Number of nX5 0..1 arrays with every element unequal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.
A316754
Number of nX5 0..1 arrays with every element unequal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =3a(1) =27a(2) =79a(3) =37a(4) =642a(5) =3366a(6) =4397a(7) =25154a(8) =137845a(9) =309382a(10) =1206207a(11) =5904494a(12) =17498116a(13) =61651672a(14) =267672528a(15) =908607719a(16) =3166116692a(17) =12672266364a(18) =45619974681a(19) =161089019345a(20) =615680573625
External references
- oeis: A316754