89304765domain: NAppears in sequencesa(n) = (F(8n+2)-1)/3, where F=A000045 (the Fibonacci sequence).at n=5A049655A Fibonacci convolution.at n=20A099483Lower (1/3)-midsequence of (F(2n)) and (F(2n+1)), where F=A000045 (Fibonacci numbers); see Comments.at n=20A387782