Number of nX7 0..1 arrays with every element equal to 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.

A298054

Number of nX7 0..1 arrays with every element equal to 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =95a(2) =63a(3) =240a(4) =422a(5) =780a(6) =1708a(7) =3362a(8) =6794a(9) =14943a(10) =29523a(11) =61474a(12) =128150a(13) =264417a(14) =548393a(15) =1137867a(16) =2348710a(17) =4866530a(18) =10091166a(19) =20917294a(20) =43349064a(21) =89869896a(22) =186296604a(23) =386177081a(24) =800695527a(25) =1660420377a(26) =3442732936a(27) =7137995410

External references