Number of (n+1) X (1+1) 0..3 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..3 introduced in row major order.
A239150
Number of (n+1) X (1+1) 0..3 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..3 introduced in row major order.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =17a(4) =96a(5) =340a(6) =1639a(7) =6623a(8) =29843a(9) =126163a(10) =554310a(11) =2380524a(12) =10363965a(13) =44756085a(14) =194216303a(15) =840357677a(16) =3642433780a(17) =15771490916a(18) =68331367227a(19) =295943443667
External references
- oeis: A239150