A234715 - cp's OEIS frontend

A234715 Denominator of sum_{k=1..n} 1/(k*H(k)) where H(k) is the harmonic number H(k) = sum_{j=1..n} 1/j.

n	a(n)
0	1
1	1
2	3
3	33
4	825
5	113025
6	5538225
7	60920475
8	46360481475
9	330503872435275
10	20160736218551775
11	1687675389591187637025
12	145175524688023551724527525
13	166370135063802174111446471957325
14	194941377468714112878127508925972294225
15	8038017817167489016303831575544615607779425

[1, 1, 3, 33, 825, 113025, 5538225, 60920475, 46360481475, 330503872435275, 20160736218551775, 1687675389591187637025, 145175524688023551724527525, 166370135063802174111446471957325, 194941377468714112878127508925972294225, 8038017817167489016303831575544615607779425]

cp's OEIS Frontend

A234715 Denominator of sum_{k=1..n} 1/(k*H(k)) where H(k) is the harmonic number H(k) = sum_{j=1..n} 1/j.

Table of values

List of values