2079362domain: NAppears in sequencesNumbers whose square with its last digit deleted is also a square.at n=30A031149a(n) = 6*a(n-1) + a(n-2), starting with a(0)=2 and a(1)=6.at n=8A085447Numbers n such that (n^2-4)/10 is a square.at n=3A239364