612103967domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = (F(8*n+6) - 2)/3, where F=A000045 (the Fibonacci sequence).at n=5A049659A Fibonacci convolution.at n=22A099484Lower (1/3)-midsequence of (F(2n)) and (F(2n+1)), where F=A000045 (Fibonacci numbers); see Comments.at n=22A387782Prime numbersat n=31923321