Number of 2Xn 0..2 arrays with no more than floor(2Xn/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
A223001
Number of 2Xn 0..2 arrays with no more than floor(2Xn/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =2a(1) =7a(2) =45a(3) =272a(4) =1814a(5) =12742a(6) =87682a(7) =608358a(8) =4249808a(9) =29840968a(10) =210352688a(11) =1488131168a(12) =10553965640a(13) =75038380408a(14) =534638034296
External references
- oeis: A223001