Number of nX3 0..1 arrays with every element equal to 0, 1, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

A299189

Number of nX3 0..1 arrays with every element equal to 0, 1, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =3a(2) =3a(3) =9a(4) =19a(5) =59a(6) =129a(7) =355a(8) =891a(9) =2317a(10) =6019a(11) =15543a(12) =40557a(13) =105639a(14) =274475a(15) =716909a(16) =1868955a(17) =4870915a(18) =12717105a(19) =33177547a(20) =86555071a(21) =225940757a(22) =589641087a(23) =1538803595a(24) =4016626149a(25) =10483511171a(26) =27362265959a(27) =71420814253a(28) =186418208451

External references