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

A297809

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

Terms

    a(0) =0a(1) =1a(2) =2a(3) =1a(4) =8a(5) =5a(6) =22a(7) =29a(8) =60a(9) =121a(10) =194a(11) =425a(12) =704a(13) =1421a(14) =2574a(15) =4821a(16) =9156a(17) =16769a(18) =31962a(19) =58977a(20) =111112a(21) =207317a(22) =387366a(23) =726221a(24) =1354508a(25) =2538761a(26) =4741234a(27) =8872857a(28) =16592208a(29) =31023517

External references