66690domain: NAppears in sequencesa(n) = Sum_{i+j+k=n, i,j,k >= 1} tau(i)*tau(j)*tau(k), where tau() = A000005().at n=54A191829Nonequivalent ways to place two different markers (e.g., a pair of Go stones, black and white) on an n X n grid.at n=26A242709Primitive terms of A023197 that are of the form 4u+2.at n=44A388020