Number of nX3 0..1 arrays with every element equal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

A299244

Number of nX3 0..1 arrays with every element equal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =7a(2) =6a(3) =18a(4) =30a(5) =87a(6) =202a(7) =526a(8) =1449a(9) =3893a(10) =10886a(11) =30529a(12) =85878a(13) =243545a(14) =691293a(15) =1966629a(16) =5603311a(17) =15974714a(18) =45572960a(19) =130060050a(20) =371260631a(21) =1059964088a(22) =3026563164a(23) =8642492229a(24) =24680273281a(25) =70481398248a(26) =201283524625a(27) =574841555052

External references