Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 5 king-move adjacent elements, with upper left element zero.

A297939

Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 5 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =18a(2) =14a(3) =33a(4) =74a(5) =226a(6) =694a(7) =2121a(8) =6517a(9) =20208a(10) =62318a(11) =194028a(12) =605018a(13) =1886146a(14) =5880293a(15) =18345280a(16) =57237337a(17) =178610253a(18) =557469488a(19) =1740070101a(20) =5431575417a(21) =16955289509a(22) =52929706608a(23) =165234844426a(24) =515834559905

External references