107065domain: NAppears in sequencesExpansion of 1/((1-3*x)*(1-6*x)*(1-7*x)*(1-12*x)).at n=4A028078G.f.: 1/(1 - x/(1+2*x - x^3/(1+2*x^2 - x^5/(1+2*x^3 - x^7/(1+2*x^4 - x^9/(1 - ...)))))), a continued fraction.at n=79A275761Integers k such that 511*2^k - 1 is prime.at n=44A387925