Number of nX6 0..1 arrays with every element equal to 2 or 3 king-move adjacent elements, with upper left element zero.

A297812

Number of nX6 0..1 arrays with every element equal to 2 or 3 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =5a(2) =2a(3) =27a(4) =41a(5) =83a(6) =114a(7) =275a(8) =686a(9) =1545a(10) =3209a(11) =6926a(12) =15327a(13) =34142a(14) =75795a(15) =168685a(16) =375208a(17) =834100a(18) =1854569a(19) =4127686a(20) =9192789a(21) =20481637a(22) =45642156a(23) =101730031a(24) =226780797a(25) =505643168a(26) =1127586788a(27) =2514869226a(28) =5609551959a(29) =12513571286

External references