A135832 - cp's OEIS frontend

A135832 Irregular triangle of Section I primes. Row n contains primes p with 2^n < p < 2^(n+1) and phi^n(p) = 2, where phi^n means n iterations of Euler's totient function.

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	17
7	23
8	29
9	31
10	41
11	47
12	53
13	59
14	61
15	83
16	89
17	97
18	101
19	103
20	107
21	113
22	137
23	167
24	179
25	193
26	227
27	233
28	239
29	241
30	251
31	257
32	353
33	359
34	389
35	401
36	409
37	443
38	449
39	461
40	467
41	479
42	499
43	503
44	641
45	719
46	769
47	773
48	809
49	821
50	823
51	857
52	881
53	887
54	929
55	941
56	953

[3, 5, 7, 11, 13, 17, 23, 29, 31, 41, 47, 53, 59, 61, 83, 89, 97, 101, 103, 107, 113, 137, 167, 179, 193, 227, 233, 239, 241, 251, 257, 353, 359, 389, 401, 409, 443, 449, 461, 467, 479, 499, 503, 641, 719, 769, 773, 809, 821, 823, 857, 881, 887, 929, 941, 953]

cp's OEIS Frontend

A135832 Irregular triangle of Section I primes. Row n contains primes p with 2^n < p < 2^(n+1) and phi^n(p) = 2, where phi^n means n iterations of Euler's totient function.

Table of values

List of values

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	17
7	23
8	29
9	31
10	41
11	47
12	53
13	59
14	61
15	83
16	89
17	97
18	101
19	103
20	107
21	113
22	137
23	167
24	179
25	193
26	227
27	233
28	239
29	241
30	251
31	257
32	353
33	359
34	389
35	401
36	409
37	443
38	449
39	461
40	467
41	479
42	499
43	503
44	641
45	719
46	769
47	773
48	809
49	821
50	823
51	857
52	881
53	887
54	929
55	941
56	953

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	17
7	23
8	29
9	31
10	41
11	47
12	53
13	59
14	61
15	83
16	89
17	97
18	101
19	103
20	107
21	113
22	137
23	167
24	179
25	193
26	227
27	233
28	239
29	241
30	251
31	257
32	353
33	359
34	389
35	401
36	409
37	443
38	449
39	461
40	467
41	479
42	499
43	503
44	641
45	719
46	769
47	773
48	809
49	821
50	823
51	857
52	881
53	887
54	929
55	941
56	953

n	a(n)
1	3
2	5
3	7
4	11
5	13
6	17
7	23
8	29
9	31
10	41
11	47
12	53
13	59
14	61
15	83
16	89
17	97
18	101
19	103
20	107
21	113
22	137
23	167
24	179
25	193
26	227
27	233
28	239
29	241
30	251
31	257
32	353
33	359
34	389
35	401
36	409
37	443
38	449
39	461
40	467
41	479
42	499
43	503
44	641
45	719
46	769
47	773
48	809
49	821
50	823
51	857
52	881
53	887
54	929
55	941
56	953