85180domain: NAppears in sequencesNumber of idempotent 4X4 0..n matrices of rank 3.at n=20A224335Expansion of psi(x^4) / f(-x) in powers of x where psi(), f() are Ramanujan theta functions.at n=42A226635Number of multisets of nonempty strict integer partitions with a total of 2n parts and total sum of 3n.at n=17A360785