Number of nX2 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

A298234

Number of nX2 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =5a(2) =13a(3) =42a(4) =127a(5) =389a(6) =1192a(7) =3645a(8) =11161a(9) =34154a(10) =104539a(11) =319953a(12) =979264a(13) =2997185a(14) =9173317a(15) =28076298a(16) =85931623a(17) =263006381a(18) =804969688a(19) =2463728085a(20) =7540602049a(21) =23079121226a(22) =70637043811a(23) =216195058137a(24) =661696762096

External references