A336015 - cp's OEIS frontend

A336015 Irregular triangle where row n lists primes q below the n-th primorial such that the multiplicative order of q mod the n-th primorial is 2. I.e., such primes q having the least k such that q^k (mod primorial(n)) == 1 is 2.

n	a(n)
2	5
3	11
4	19
5	29
6	29
7	41
8	71
9	139
10	181
11	419
12	461
13	659
14	769
15	881
16	1231
17	1429
18	2309
19	1429
20	2729
21	4159
22	5279
23	5851
24	8009
25	8581
26	10009
27	12011
28	12739
29	13441
30	13859
31	14741
32	15289
33	17291
34	20021
35	23869
36	24179
37	30029
38	1429
39	23869
40	77351
41	95369
42	102101
43	116689
44	120121
45	188189

[5, 11, 19, 29, 29, 41, 71, 139, 181, 419, 461, 659, 769, 881, 1231, 1429, 2309, 1429, 2729, 4159, 5279, 5851, 8009, 8581, 10009, 12011, 12739, 13441, 13859, 14741, 15289, 17291, 20021, 23869, 24179, 30029, 1429, 23869, 77351, 95369, 102101, 116689, 120121, 188189]

cp's OEIS Frontend

A336015 Irregular triangle where row n lists primes q below the n-th primorial such that the multiplicative order of q mod the n-th primorial is 2. I.e., such primes q having the least k such that q^k (mod primorial(n)) == 1 is 2.

Table of values

List of values