Number of n X 2 0..3 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling three no more than once.
A269188
Number of n X 2 0..3 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling three no more than once.
Terms
- a(0) =16a(1) =108a(2) =708a(3) =4476a(4) =27684a(5) =168252a(6) =1008804a(7) =5983164a(8) =35170980a(9) =205214268a(10) =1189853604a(11) =6861684156a(12) =39384946596a(13) =225136169532
External references
- oeis: A269188