Number of nX7 0..1 arrays with every element unequal to 0, 1, 2 or 3 king-move adjacent elements, with upper left element zero.

A303726

Number of nX7 0..1 arrays with every element unequal to 0, 1, 2 or 3 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =64a(1) =719a(2) =294a(3) =406a(4) =564a(5) =894a(6) =1476a(7) =2252a(8) =3461a(9) =5631a(10) =9362a(11) =15569a(12) =26111a(13) =43960a(14) =73883a(15) =124371a(16) =209956a(17) =354631a(18) =598917a(19) =1012022a(20) =1710721a(21) =2891805a(22) =4888812a(23) =8266307a(24) =13977941a(25) =23636428a(26) =39970625a(27) =67595175a(28) =114312998a(29) =193321957

External references