Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its west, northeast or southeast neighbor modulo 4 and the upper left element equal to 0.
A267224
Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its west, northeast or southeast neighbor modulo 4 and the upper left element equal to 0.
Terms
- a(0) =6a(1) =35a(2) =458a(3) =7137a(4) =127262a(5) =2409733a(6) =47615756a(7) =971807573a(8) =20350582884a(9) =435153995835
External references
- oeis: A267224