A337427 - cp's OEIS frontend

A337427 a(n) is the least prime of the form (3^r5^s7^t - 1)/2, r, s, t > 0, r + s + t = n.

n	a(n)
4	157
5	787
6	3307
7	19687
8	12757
9	347287
10	267907
11	3125587
12	2870437
13	5166787
14	25833937
15	590736037
16	232505437
17	2712563437
18	13562817187
19	3766588087
20	52313723437
21	726579492187
22	332213069317
23	847482319687
24	4237411598437
25	115351760179687
26	88985643567187
27	68646067894687

[157, 787, 3307, 19687, 12757, 347287, 267907, 3125587, 2870437, 5166787, 25833937, 590736037, 232505437, 2712563437, 13562817187, 3766588087, 52313723437, 726579492187, 332213069317, 847482319687, 4237411598437, 115351760179687, 88985643567187, 68646067894687]

cp's OEIS Frontend

A337427 a(n) is the least prime of the form (3^r5^s7^t - 1)/2, r, s, t > 0, r + s + t = n.

Table of values

List of values

cp's OEIS Frontend

A337427 a(n) is the least prime of the form (3^r*5^s*7^t - 1)/2, r, s, t > 0, r + s + t = n.

Table of values

List of values

A337427 a(n) is the least prime of the form (3^r5^s7^t - 1)/2, r, s, t > 0, r + s + t = n.