A081971 - cp's OEIS frontend

A081971 Consider the harmonic progression 1,1/2,1/3,1/4,1/5,..., group the terms such that the n-th group contains n members like this (1/1),(1/2,1/3),(1/4,1/5,1/6), (1/7,1/8,1/9,1/10),... a(n) = the numerator of the reduced rational sum of the terms of the n-th group.

n	a(n)
1	1
2	5
3	37
4	1207
5	7793
6	532541
7	35036093
8	419218787
9	98431469723
10	14642854403167
11	6408932966879
12	4075936031956831
13	504163702484694137
14	78452289445098136367
15	9442422052170405158543
16	711841627568479091422201

[1, 5, 37, 1207, 7793, 532541, 35036093, 419218787, 98431469723, 14642854403167, 6408932966879, 4075936031956831, 504163702484694137, 78452289445098136367, 9442422052170405158543, 711841627568479091422201]

cp's OEIS Frontend

A081971 Consider the harmonic progression 1,1/2,1/3,1/4,1/5,..., group the terms such that the n-th group contains n members like this (1/1),(1/2,1/3),(1/4,1/5,1/6), (1/7,1/8,1/9,1/10),... a(n) = the numerator of the reduced rational sum of the terms of the n-th group.

Table of values

List of values