Number of nX2 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

A298215

Number of nX2 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =2a(1) =7a(2) =13a(3) =29a(4) =73a(5) =157a(6) =353a(7) =869a(8) =1993a(9) =4557a(10) =10993a(11) =25909a(12) =60313a(13) =144157a(14) =343233a(15) =809349a(16) =1929833a(17) =4610157a(18) =10953873a(19) =26130389a(20) =62487353a(21) =149069757a(22) =356015713a(23) =851720229a(24) =2035889673a(25) =4867238157a(26) =11647445553a(27) =27867454069a(28) =66671141593

External references