Number of nX4 0..1 arrays with every element equal to 0, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

A298663

Number of nX4 0..1 arrays with every element equal to 0, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =9a(6) =13a(7) =26a(8) =74a(9) =134a(10) =325a(11) =731a(12) =1568a(13) =3625a(14) =8039a(15) =17982a(16) =40534a(17) =90659a(18) =203629a(19) =456958a(20) =1025608a(21) =2302082a(22) =5167454a(23) =11602659a(24) =26043008a(25) =58476012a(26) =131288529a(27) =294749848a(28) =661837914a(29) =1485958282

External references