A375794 - cp's OEIS frontend

A375794 Numbers k such that 2^k == 2 (mod ((k - 1)k/2)) and not 2^k == 2 (mod ((k - 1)k)).

n	a(n)
1	5
2	13
3	37
4	61
5	101
6	109
7	157
8	181
9	421
10	541
11	661
12	757
13	821
14	1093
15	1621
16	1861
17	2029
18	2053
19	2269
20	2341
21	2437
22	2701
23	2917
24	3277
25	3301
26	3613
27	4621
28	4789
29	4861
30	5461
31	5501
32	5581
33	6301
34	6661
35	7309
36	8101
37	8269
38	8581
39	8821
40	8893
41	9829
42	9901
43	10141
44	10261
45	10501
46	10837
47	11701
48	12101
49	12301

[5, 13, 37, 61, 101, 109, 157, 181, 421, 541, 661, 757, 821, 1093, 1621, 1861, 2029, 2053, 2269, 2341, 2437, 2701, 2917, 3277, 3301, 3613, 4621, 4789, 4861, 5461, 5501, 5581, 6301, 6661, 7309, 8101, 8269, 8581, 8821, 8893, 9829, 9901, 10141, 10261, 10501, 10837, 11701, 12101, 12301]

cp's OEIS Frontend

A375794 Numbers k such that 2^k == 2 (mod ((k - 1)k/2)) and not 2^k == 2 (mod ((k - 1)k)).

Table of values

List of values

cp's OEIS Frontend

A375794 Numbers k such that 2^k == 2 (mod ((k - 1)*k/2)) and not 2^k == 2 (mod ((k - 1)*k)).

Table of values

List of values

A375794 Numbers k such that 2^k == 2 (mod ((k - 1)k/2)) and not 2^k == 2 (mod ((k - 1)k)).