A111918 - cp's OEIS frontend

A111918 Numerator of x(n) = Sum_{k=1..n} ((odd part of k)/(k^3)).

n	a(n)
1	1
2	9
3	89
4	721
5	18601
6	2089
7	103961
8	832913
9	68093153
10	68347169
11	8320810649
12	8331482849
13	1414167788681
14	1416817979081
15	1421435199689
16	11373510649537
17	3295255574810593
18	366551352989977
19	132591913780524097
20	132652127531625601

[1, 9, 89, 721, 18601, 2089, 103961, 832913, 68093153, 68347169, 8320810649, 8331482849, 1414167788681, 1416817979081, 1421435199689, 11373510649537, 3295255574810593, 366551352989977, 132591913780524097, 132652127531625601]

cp's OEIS Frontend

A111918 Numerator of x(n) = Sum_{k=1..n} ((odd part of k)/(k^3)).

Table of values

List of values