191717domain: NPropertiesPrimalityPrimeyesAppears in sequencesNearest integer to the n-th root of e leading to a generalized closed form for Zeta(s).at n=29A108925Expansion of x/((1 - x - x^4)*(1 - x)^5).at n=21A145134Partial sums of primes, but with a twist.at n=34A247657Prime numbersat n=17306