Number of nX4 0..1 arrays with every element equal to 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

A298096

Number of nX4 0..1 arrays with every element equal to 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =2a(2) =1a(3) =3a(4) =7a(5) =20a(6) =42a(7) =121a(8) =291a(9) =782a(10) =1987a(11) =5247a(12) =13553a(13) =35592a(14) =92599a(15) =242445a(16) =632707a(17) =1654855a(18) =4323102a(19) =11303415a(20) =29540495a(21) =77227391a(22) =201859196a(23) =527690923a(24) =1379374791a(25) =3605831654a(26) =9425790420a(27) =24639842009a(28) =64410102689a(29) =168373214417

External references