16225589domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = 3*b_3(n)+2, where b_3 lists the zeros of the sequence A261303: u(n+1)=abs(u(n)-gcd(u(n),3*n+2)), u(1)=1.at n=11A186255Prime numbersat n=1044677