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

A297937

Number of nX2 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) =5a(2) =7a(3) =18a(4) =31a(5) =65a(6) =130a(7) =253a(8) =519a(9) =1018a(10) =2055a(11) =4097a(12) =8186a(13) =16405a(14) =32743a(15) =65570a(16) =131055a(17) =262145a(18) =524338a(19) =1048493a(20) =2097287a(21) =4194186a(22) =8388695a(23) =16777281a(24) =33554218a(25) =67109317a(26) =134217191a(27) =268436018a(28) =536870719a(29) =1073741505

External references