Denominator of Sum_{k=1..n} k^2*H_{n+k} where H_m = Sum_{i=1..m} 1/i.
A144653
Denominator of Sum_{k=1..n} k^2*H_{n+k} where H_m = Sum_{i=1..m} 1/i.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =15a(4) =21a(5) =126a(6) =990a(7) =1287a(8) =15015a(9) =102102a(10) =75582a(11) =1322685a(12) =5148297a(13) =12257850a(14) =286833690a(15) =29113619535a(16) =24131609775a(17) =5056146810a(18) =158337229050a(19) =135195634035
External references
- oeis: A144653