56574159domain: NAppears in sequencesNumerator of n*HarmonicNumber(n).at n=20A096617Numerator of the product of the n-th triangular number and the n-th harmonic number.at n=20A119786a(n) = numerator of Sum_{i=1..n} Sum_{j=1..n} (1/i + 1/j).at n=20A368810