1347822955

Appears in sequences

• a(n) = numerator of harmonic number H(n) = Sum_{i=1..n} 1/i.at n=23A001008
• Numerator of n*HarmonicNumber(n).at n=23A096617
• Numerator of absolute value of Sum_{k=1..n} (-1)^(k+1)*(2*k+1)*(Sum_{i=1..k} 1/i).at n=22A120284
• a(n) = numerator of sum{k=1 to n} 1/A127518(k).at n=23A127519
• Numerator of the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=1.at n=11A145609
• a(n) = squarefree part of A145609(n).at n=11A145738
• Denominator of the harmonic mean of the first n positive integers.at n=23A175441
• a(n) = numerator of Sum_{i=1..n} Sum_{j=1..n} (1/i + 1/j).at n=23A368810
• Largest squarefree number dividing the numerator of harmonic number H(n).at n=23A382213