A337437 - cp's OEIS frontend

A337437 a(n) is the least prime of the form 2^j*3^k - 1, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.

n	a(n)
2	5
3	11
4	23
5	47
6	0
7	191
8	383
9	1151
10	0
11	6911
12	6143
13	27647
14	0
15	73727
16	497663
17	294911
18	0
19	786431
20	17915903
21	10616831
22	0
23	18874367
24	188286357653
25	169869311
26	0
27	39182082047
28	10319560703
29	4076863487
30	0
31	7247757311
32	32614907903
33	495338913791
34	0
35	51539607551
36	1174136684543

[5, 11, 23, 47, 0, 191, 383, 1151, 0, 6911, 6143, 27647, 0, 73727, 497663, 294911, 0, 786431, 17915903, 10616831, 0, 18874367, 188286357653, 169869311, 0, 39182082047, 10319560703, 4076863487, 0, 7247757311, 32614907903, 495338913791, 0, 51539607551, 1174136684543]

cp's OEIS Frontend

A337437 a(n) is the least prime of the form 2^j*3^k - 1, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.

Table of values

List of values