1/6 the number of (n+2)X8 0..2 arrays with each 3X3 subblock containing one of one value, four of another, and four of the last.
A184474
1/6 the number of (n+2)X8 0..2 arrays with each 3X3 subblock containing one of one value, four of another, and four of the last.
Terms
- a(0) =161739a(1) =200215a(2) =249953a(3) =322275a(4) =520289a(5) =904411a(6) =1782585a(7) =4808779a(8) =13539521a(9) =40005219
External references
- oeis: A184474