252983943domain: NAppears in sequencesa(0)=a(1)=3; thereafter a(n) = a(n-1) + a(n-2) + 1.at n=38A022403Numbers with equal counts of 1's and 0's in both their binary and Zeckendorf representations.at n=22A327911a(0)=1, a(1)=3, a(2)=7; thereafter a(n) = a(n-1) + a(n-2) + 1.at n=38A355288