Number of n X 3 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2 or 4 1s.

A295374

Number of n X 3 0..1 arrays with each 1 horizontally or vertically adjacent to 0, 2 or 4 1s.

Terms

    a(0) =5a(1) =19a(2) =74a(3) =278a(4) =1067a(5) =4071a(6) =15557a(7) =59407a(8) =226944a(9) =866828a(10) =3311093a(11) =12647369a(12) =48309585a(13) =184528995a(14) =704849914a(15) =2692330642a(16) =10283957167a(17) =39281862695a(18) =150045822457a(19) =573133422103

External references