Number of n X 4 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero.

A305241

Number of n X 4 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =24a(2) =32a(3) =94a(4) =273a(5) =767a(6) =2128a(7) =6150a(8) =17387a(9) =49477a(10) =140832a(11) =401136a(12) =1140970a(13) =3248777a(14) =9248091a(15) =26325969a(16) =74939305a(17) =213335733a(18) =607295337a(19) =1728785729a(20) =4921333566a(21) =14009574825a(22) =39881001737a(23) =113529283100a(24) =323183797078a(25) =920007268842

External references