A135777 - cp's OEIS frontend

A135777 Numbers having number of divisors equal to number of digits in base 7.

n	a(n)
1	1
2	7
3	11
4	13
5	17
6	19
7	23
8	29
9	31
10	37
11	41
12	43
13	47
14	49
15	121
16	169
17	289
18	343
19	346
20	355
21	358
22	362
23	365
24	371
25	377
26	381
27	382
28	386
29	391
30	393
31	394
32	395
33	398
34	403
35	407
36	411
37	413
38	415
39	417
40	422
41	427
42	437
43	445
44	446
45	447
46	451
47	453
48	454
49	458
50	466
51	469
52	471
53	473
54	478
55	481

[1, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 49, 121, 169, 289, 343, 346, 355, 358, 362, 365, 371, 377, 381, 382, 386, 391, 393, 394, 395, 398, 403, 407, 411, 413, 415, 417, 422, 427, 437, 445, 446, 447, 451, 453, 454, 458, 466, 469, 471, 473, 478, 481]

cp's OEIS Frontend

A135777 Numbers having number of divisors equal to number of digits in base 7.

Table of values

List of values

n	a(n)
1	1
2	7
3	11
4	13
5	17
6	19
7	23
8	29
9	31
10	37
11	41
12	43
13	47
14	49
15	121
16	169
17	289
18	343
19	346
20	355
21	358
22	362
23	365
24	371
25	377
26	381
27	382
28	386
29	391
30	393
31	394
32	395
33	398
34	403
35	407
36	411
37	413
38	415
39	417
40	422
41	427
42	437
43	445
44	446
45	447
46	451
47	453
48	454
49	458
50	466
51	469
52	471
53	473
54	478
55	481

n	a(n)
1	1
2	7
3	11
4	13
5	17
6	19
7	23
8	29
9	31
10	37
11	41
12	43
13	47
14	49
15	121
16	169
17	289
18	343
19	346
20	355
21	358
22	362
23	365
24	371
25	377
26	381
27	382
28	386
29	391
30	393
31	394
32	395
33	398
34	403
35	407
36	411
37	413
38	415
39	417
40	422
41	427
42	437
43	445
44	446
45	447
46	451
47	453
48	454
49	458
50	466
51	469
52	471
53	473
54	478
55	481

n	a(n)
1	1
2	7
3	11
4	13
5	17
6	19
7	23
8	29
9	31
10	37
11	41
12	43
13	47
14	49
15	121
16	169
17	289
18	343
19	346
20	355
21	358
22	362
23	365
24	371
25	377
26	381
27	382
28	386
29	391
30	393
31	394
32	395
33	398
34	403
35	407
36	411
37	413
38	415
39	417
40	422
41	427
42	437
43	445
44	446
45	447
46	451
47	453
48	454
49	458
50	466
51	469
52	471
53	473
54	478
55	481