Number of 3Xn 0..3 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222908
Number of 3Xn 0..3 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =5a(1) =14a(2) =45a(3) =373a(4) =1202a(5) =18981a(6) =82020a(7) =1506810a(8) =6857704a(9) =129852811a(10) =597088326a(11) =11405469595a(12) =52673539459
External references
- oeis: A222908