2845440domain: NAppears in sequencesL.g.f.: log(1 + 2*Sum_{n>=1} 2^n * x^(n^2)).at n=10A227312Welschinger invariant for the number of real plane curves of degree n passing through 3*n-1 general points.at n=5A319851Duplicate of A319851.at n=3A320605a(n) = product of nonzero entries in row n of A235791.at n=38A339577