260178domain: NAppears in sequencesEgyptian fractions: number of partitions of 1 into reciprocals of positive integers <= n.at n=27A020473Values of m such that N = (m+1)(2m+1)(71m+1) is a 3-Carmichael number (A087788).at n=14A065703Expansion of Sum_{n>=1} x^(n^2)*((1+x)/(1-x))^n.at n=43A369424