Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 4 or 7 king-move adjacent elements, with upper left element zero.
A304853
Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 4 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =13a(1) =61a(2) =51a(3) =127a(4) =334a(5) =762a(6) =2073a(7) =6400a(8) =19099a(9) =57502a(10) =177379a(11) =558534a(12) =1737485a(13) =5396418a(14) =16881862a(15) =52949556a(16) =165823511a(17) =519268185a(18) =1628313741a(19) =5107900592a(20) =16016193328a(21) =50222648697a(22) =157524010692a(23) =494102289013
External references
- oeis: A304853