476981domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = prime(prime(Fibonacci(n))).at n=18A093309Number of Dyck paths of semilength 2n having exactly n (possibly overlapping) occurrences of the consecutive pattern UDUD, where U=(1,1) and D=(1,-1).at n=9A304361Prime numbersat n=39779