Number of nX3 0..1 arrays with every element equal to 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
A299597
Number of nX3 0..1 arrays with every element equal to 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =3a(2) =9a(3) =27a(4) =147a(5) =643a(6) =3051a(7) =14539a(8) =69087a(9) =330659a(10) =1581181a(11) =7568599a(12) =36237471a(13) =173510451a(14) =830875967a(15) =3978809357a(16) =19053619021a(17) =91244122317a(18) =436951789203
External references
- oeis: A299597