Numerator of Sum_{k=1..n} H(k)*H(n+1-k), where H(k) is the k-th harmonic number (Sum_{j=1..k} 1/j).

A130894

Numerator of Sum_{k=1..n} H(k)*H(n+1-k), where H(k) is the k-th harmonic number (Sum_{j=1..k} 1/j).

Terms

    a(0) =1a(1) =3a(2) =71a(3) =29a(4) =638a(5) =349a(6) =14139a(7) =79913a(8) =325421a(9) =10418a(10) =11302933a(11) =13078889a(12) =60461593a(13) =15543383a(14) =707713291a(15) =5116885451a(17) =1726815331a(18) =28878310103a(21) =88130993047

External references