Number of nX2 0..1 arrays with every element equal to 0, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

A298569

Number of nX2 0..1 arrays with every element equal to 0, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =4a(2) =4a(3) =8a(4) =36a(5) =52a(6) =100a(7) =356a(8) =628a(9) =1220a(10) =3668a(11) =7268a(12) =14516a(13) =38980a(14) =82452a(15) =169508a(16) =423284a(17) =926980a(18) =1953236a(19) =4661476a(20) =10384180a(21) =22302148a(22) =51781012a(23) =116208548a(24) =253089012a(25) =578128516a(26) =1300672852a(27) =2860550756a(28) =6473222836a(29) =14566091588

External references