303048domain: NAppears in sequencesG.f.: { ( Product_{j=1..infinity} (1-x^j) - 1 )/x }^24.at n=7A006665Number of n X 4 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.at n=22A207064