A337423 - cp's OEIS frontend

A337423 a(n) is the least prime of the form (3^j*5^k - 1)/2, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.

n	a(n)
2	7
3	37
4	67
5	337
6	607
7	3037
8	15187
9	27337
10	49207
11	683437
12	0
13	131835937
14	659179687
15	19929037
16	35872267
17	228881835937
18	2491129687
19	0
20	0
21	311391210937
22	12013549804687
23	0
24	235357947067
25	1176789735337
26	0
27	10591107618037
28	52955538090187
29	5675104819335937
30	608185958862304687

[7, 37, 67, 337, 607, 3037, 15187, 27337, 49207, 683437, 0, 131835937, 659179687, 19929037, 35872267, 228881835937, 2491129687, 0, 0, 311391210937, 12013549804687, 0, 235357947067, 1176789735337, 0, 10591107618037, 52955538090187, 5675104819335937, 608185958862304687]

cp's OEIS Frontend

A337423 a(n) is the least prime of the form (3^j*5^k - 1)/2, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.

Table of values

List of values