168424domain: NAppears in sequencesG.f. satisfies: A(x) = x + A( x^2 + x^2*A(x) ).at n=19A211180Number of compositions (ordered partitions) of n into at least 2 distinct positive parts.at n=35A216695Numbers m such that sigma(m)*tau(m) is a square but sigma(m)/tau(m) is not an integer.at n=36A327831