362281domain: NPropertiesPrimalityPrimeyesAppears in sequencesA symmetrical triangle sequence: t(n,m)=n!*Binomial[n, m]*Eulerian[n + 1, m] - n! + 1.at n=17A174693A symmetrical triangle sequence: t(n,m)=n!*Binomial[n, m]*Eulerian[n + 1, m] - n! + 1.at n=18A174693Prime numbersat n=30926