Number of (n+1) X (2+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order.
A239531
Number of (n+1) X (2+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order.
Terms
- a(0) =2a(1) =2a(2) =24a(3) =68a(4) =406a(5) =1584a(6) =7790a(7) =33630a(8) =156032a(9) =695344a(10) =3168922a(11) =14262616a(12) =64640674a(13) =291830210a(14) =1320357280a(15) =5966652996a(16) =26981170086a(17) =121963213688a(18) =551425857374
External references
- oeis: A239531