Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

A316689

Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =5a(2) =9a(3) =23a(4) =44a(5) =125a(6) =313a(7) =773a(8) =1964a(9) =4948a(10) =12456a(11) =31393a(12) =79085a(13) =199281a(14) =502100a(15) =1265024a(16) =3187400a(17) =8030877a(18) =20234253a(19) =50981805a(20) =128452324a(21) =323644732a(22) =815446408a(23) =2054575929a(24) =5176652093a(25) =13042948233a(26) =32862647844a(27) =82799810200a(28) =208620089912

External references