A078559 - cp's OEIS frontend

A078559 Numerator of Product_{i=1..n} (p_i + 1)/(p_i - 1) where p_i is the i-th prime.

n	a(n)
1	3
2	6
3	9
4	12
5	72
6	84
7	189
8	21
9	252
10	270
11	288
12	304
13	1596
14	152
15	3648
16	49248
17	295488
18	1526688
19	17302464
20	622888704
21	640191168
22	1707176448
23	10243058688
24	23046882048
25	23527025424
26	599939148312
27	47054050848
28	2540918745792

[3, 6, 9, 12, 72, 84, 189, 21, 252, 270, 288, 304, 1596, 152, 3648, 49248, 295488, 1526688, 17302464, 622888704, 640191168, 1707176448, 10243058688, 23046882048, 23527025424, 599939148312, 47054050848, 2540918745792]

cp's OEIS Frontend

A078559 Numerator of Product_{i=1..n} (p_i + 1)/(p_i - 1) where p_i is the i-th prime.

Table of values

List of values