182927domain: NPropertiesPrimalityPrimeyesAppears in sequencesExpansion of 1/(1-x^3-x^4-x^5-x^6-x^7-x^8).at n=38A017821Expansion of Sum_{k>=0} x^(k*(k+1)) / Product_{j=1..k} (1 - x^j)^j.at n=53A306664Lesser of twin self primes, i.e., smaller member of the pair of self primes differing by 2.at n=17A380713Prime numbersat n=16576