A111921 - cp's OEIS frontend

A111921 Denominator of x(n) = Sum_{k=1..n} ((odd part of k)/(k^4)).

n	a(n)
1	1
2	16
3	432
4	6912
5	864000
6	864000
7	296352000
8	4741632000
9	128024064000
10	128024064000
11	170400029184000
12	170400029184000
13	374368864117248000
14	374368864117248000
15	14974754564689920
16	239596073035038720

[1, 16, 432, 6912, 864000, 864000, 296352000, 4741632000, 128024064000, 128024064000, 170400029184000, 170400029184000, 374368864117248000, 374368864117248000, 14974754564689920, 239596073035038720]

cp's OEIS Frontend

A111921 Denominator of x(n) = Sum_{k=1..n} ((odd part of k)/(k^4)).

Table of values

List of values