A290474 - cp's OEIS frontend

A290474 Number of fractional partitions of n where each element of a partition is a rational number r/s such that r < s, s <= n, and gcd(r,s) = 1.

n	a(n)
0	1
1	0
2	1
3	12
4	135
5	4477
6	100160
7	8663934
8	485380025
9	80730951180
10	10180011676356
11	4126137351376215
12	563950787766342780
13	456369006693283278869
14	200330760220853808357439
15	335435016971402890883460861
16	197675615401466868237710861644
17	561969529551274362018496511765678

[1, 0, 1, 12, 135, 4477, 100160, 8663934, 485380025, 80730951180, 10180011676356, 4126137351376215, 563950787766342780, 456369006693283278869, 200330760220853808357439, 335435016971402890883460861, 197675615401466868237710861644, 561969529551274362018496511765678]

cp's OEIS Frontend

A290474 Number of fractional partitions of n where each element of a partition is a rational number r/s such that r < s, s <= n, and gcd(r,s) = 1.

Table of values

List of values