Number of 3Xn 0..1 arrays with every element equal to 0 or 1 horizontally or antidiagonally adjacent elements, with upper left element zero.

A301792

Number of 3Xn 0..1 arrays with every element equal to 0 or 1 horizontally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =13a(2) =12a(3) =17a(4) =25a(5) =38a(6) =59a(7) =93a(8) =148a(9) =237a(10) =381a(11) =614a(12) =991a(13) =1601a(14) =2588a(15) =4185a(16) =6769a(17) =10950a(18) =17715a(19) =28661a(20) =46372a(21) =75029a(22) =121397a(23) =196422a(24) =317815a(25) =514233a(26) =832044a(27) =1346273a(28) =2178313a(29) =3524582

External references