A252281 - cp's OEIS frontend

A252281 For a prime p, denote by s(p,k) the odd part of the digital sum of p^k. Let k_1 be the smallest k such that s(p,k) is divisible by 11. Sequence lists primes p for which s(p,k_1)=11.

n	a(n)
1	2
2	5
3	7
4	13
5	23
6	29
7	31
8	43
9	47
10	53
11	59
12	79
13	83
14	97
15	137
16	139
17	173
18	191
19	227
20	239
21	241
22	257
23	263
24	281
25	317
26	331
27	337
28	349
29	353
30	359
31	373
32	383
33	421
34	439
35	443
36	449
37	461
38	463
39	467
40	479
41	499
42	509
43	523
44	547
45	557
46	563
47	569
48	593
49	599
50	607
51	619
52	641
53	643
54	653
55	659

[2, 5, 7, 13, 23, 29, 31, 43, 47, 53, 59, 79, 83, 97, 137, 139, 173, 191, 227, 239, 241, 257, 263, 281, 317, 331, 337, 349, 353, 359, 373, 383, 421, 439, 443, 449, 461, 463, 467, 479, 499, 509, 523, 547, 557, 563, 569, 593, 599, 607, 619, 641, 643, 653, 659]

cp's OEIS Frontend

A252281 For a prime p, denote by s(p,k) the odd part of the digital sum of p^k. Let k_1 be the smallest k such that s(p,k) is divisible by 11. Sequence lists primes p for which s(p,k_1)=11.

Table of values

List of values

n	a(n)
1	2
2	5
3	7
4	13
5	23
6	29
7	31
8	43
9	47
10	53
11	59
12	79
13	83
14	97
15	137
16	139
17	173
18	191
19	227
20	239
21	241
22	257
23	263
24	281
25	317
26	331
27	337
28	349
29	353
30	359
31	373
32	383
33	421
34	439
35	443
36	449
37	461
38	463
39	467
40	479
41	499
42	509
43	523
44	547
45	557
46	563
47	569
48	593
49	599
50	607
51	619
52	641
53	643
54	653
55	659

n	a(n)
1	2
2	5
3	7
4	13
5	23
6	29
7	31
8	43
9	47
10	53
11	59
12	79
13	83
14	97
15	137
16	139
17	173
18	191
19	227
20	239
21	241
22	257
23	263
24	281
25	317
26	331
27	337
28	349
29	353
30	359
31	373
32	383
33	421
34	439
35	443
36	449
37	461
38	463
39	467
40	479
41	499
42	509
43	523
44	547
45	557
46	563
47	569
48	593
49	599
50	607
51	619
52	641
53	643
54	653
55	659

n	a(n)
1	2
2	5
3	7
4	13
5	23
6	29
7	31
8	43
9	47
10	53
11	59
12	79
13	83
14	97
15	137
16	139
17	173
18	191
19	227
20	239
21	241
22	257
23	263
24	281
25	317
26	331
27	337
28	349
29	353
30	359
31	373
32	383
33	421
34	439
35	443
36	449
37	461
38	463
39	467
40	479
41	499
42	509
43	523
44	547
45	557
46	563
47	569
48	593
49	599
50	607
51	619
52	641
53	643
54	653
55	659