550725domain: NAppears in sequencesExpansion of g.f. x*(1+x)^4/(1-x)^6.at n=21A069038Crystal ball sequence for the lattice C_5.at n=10A142994Least composite such that complementing one bit in its binary representation at a time produces exactly n primes.at n=14A322743Positions of records in A383271.at n=14A383272