Number of n X 2 0..1 arrays with no element less than a strict majority of its horizontal and vertical neighbors.

A231376

Number of n X 2 0..1 arrays with no element less than a strict majority of its horizontal and vertical neighbors.

Terms

    a(0) =2a(1) =10a(2) =21a(3) =48a(4) =113a(5) =261a(6) =601a(7) =1390a(8) =3216a(9) =7435a(10) =17190a(11) =39751a(12) =91921a(13) =212555a(14) =491510a(15) =1136570a(16) =2628207a(17) =6077470a(18) =14053561a(19) =32497507a(20) =75147355a(21) =173771026a(22) =401828790a(23) =929190453a(24) =2148663614a(25) =4968578109a(26) =11489359399a(27) =26568039511a(28) =61436038272

External references