A111919 - cp's OEIS frontend

A111919 Denominator of x(n) = Sum_{k=1..n} ((odd part of k)/(k^3)).

n	a(n)
1	1
2	8
3	72
4	576
5	14400
6	1600
7	78400
8	627200
9	50803200
10	50803200
11	6147187200
12	6147187200
13	1038874636800
14	1038874636800
15	1038874636800
16	8310997094400
17	2401878160281600
18	266875351142400
19	96342001762406400
20	96342001762406400

[1, 8, 72, 576, 14400, 1600, 78400, 627200, 50803200, 50803200, 6147187200, 6147187200, 1038874636800, 1038874636800, 1038874636800, 8310997094400, 2401878160281600, 266875351142400, 96342001762406400, 96342001762406400]

cp's OEIS Frontend

A111919 Denominator of x(n) = Sum_{k=1..n} ((odd part of k)/(k^3)).

Table of values

List of values