Number of nX2 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

A298148

Number of nX2 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =2a(1) =4a(2) =4a(3) =16a(4) =50a(5) =112a(6) =348a(7) =1028a(8) =2796a(9) =8216a(10) =23816a(11) =67776a(12) =196296a(13) =566512a(14) =1628384a(15) =4699280a(16) =13549232a(17) =39031840a(18) =112541888a(19) =324422976a(20) =935034208a(21) =2695453440a(22) =7769839552a(23) =22396226368a(24) =64559126592a(25) =186094935168a(26) =536423458688

External references