Number of nX5 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

A302632

Number of nX5 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =25a(2) =25a(3) =65a(4) =257a(5) =719a(6) =2303a(7) =7695a(8) =24205a(9) =77827a(10) =251835a(11) =806047a(12) =2591353a(13) =8340665a(14) =26787773a(15) =86104127a(16) =276842555a(17) =889744085a(18) =2859889913a(19) =9193087135a(20) =29549125343a(21) =94980382961a(22) =305300890107a(23) =981337384507

External references