137659domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that q-p = 40, where q is the next prime after p.at n=37A126721G.f. satisfies: A(x) = A(x^2) + x*A(x)^2.at n=11A181999Number of compositions of n avoiding equidistant 3-term arithmetic progressions.at n=22A238432Prime numbersat n=12815