119796domain: NAppears in sequencesPisot sequence T(2,5), a(n) = floor(a(n-1)^2/a(n-2)).at n=13A018914a(n) = floor(11^n/3^n).at n=9A094978Numbers k such that k and k+2 are both unitary untouchable numbers (A063948).at n=11A357323