A387196 - cp's OEIS frontend

A387196 Integers k such that 1/k = (1/p - 1/q)*(1/r - 1/s) for distinct primes p < q and r < s.

n	a(n)
1	13
2	17
3	19
4	20
5	21
6	25
7	36
8	37
9	45
10	49
11	55
12	91
13	105
14	127
15	169
16	181
17	187
18	247
19	307
20	361
21	391
22	429
23	541
24	577
25	667
26	811
27	937
28	961
29	969
30	1147
31	1297
32	1567
33	1591
34	1801
35	1849
36	1927

[13, 17, 19, 20, 21, 25, 36, 37, 45, 49, 55, 91, 105, 127, 169, 181, 187, 247, 307, 361, 391, 429, 541, 577, 667, 811, 937, 961, 969, 1147, 1297, 1567, 1591, 1801, 1849, 1927]

cp's OEIS Frontend

A387196 Integers k such that 1/k = (1/p - 1/q)*(1/r - 1/s) for distinct primes p < q and r < s.

Table of values

List of values