85155domain: NAppears in sequencesG.f.: -1 + Product_{k>=1} (1 + prime(k)*x^prime(k)).at n=44A002099Decimal part of a(n)^(1/2) starts with a 'nine digits' anagram.at n=27A034277Sum of numbers that can be written as t*n + u*(n+1) for nonnegative integers t,u in exactly two ways.at n=13A076455