668811domain: NAppears in sequencesLast divisors at which integral quotients occur consecutively.at n=17A159639Reversion of x-x^2-x^3-2*x^4.at n=10A191242a(n) = Sum_{1 <= x_1, x_2, x_3 <= n} gcd(x_1, x_2, x_3, n)^5.at n=13A372930