A135779 - cp's OEIS frontend

A135779 Numbers having number of divisors equal to number of digits in base 9.

n	a(n)
1	1
2	11
3	13
4	17
5	19
6	23
7	29
8	31
9	37
10	41
11	43
12	47
13	53
14	59
15	61
16	67
17	71
18	73
19	79
20	121
21	169
22	289
23	361
24	529
25	731
26	734
27	737
28	745
29	746
30	749
31	753
32	755
33	758
34	763
35	766
36	767
37	771
38	778
39	779
40	781
41	785
42	789
43	791
44	793
45	794
46	799
47	802
48	803
49	807
50	813
51	815
52	817

[1, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 121, 169, 289, 361, 529, 731, 734, 737, 745, 746, 749, 753, 755, 758, 763, 766, 767, 771, 778, 779, 781, 785, 789, 791, 793, 794, 799, 802, 803, 807, 813, 815, 817]

cp's OEIS Frontend

A135779 Numbers having number of divisors equal to number of digits in base 9.

Table of values

List of values

n	a(n)
1	1
2	11
3	13
4	17
5	19
6	23
7	29
8	31
9	37
10	41
11	43
12	47
13	53
14	59
15	61
16	67
17	71
18	73
19	79
20	121
21	169
22	289
23	361
24	529
25	731
26	734
27	737
28	745
29	746
30	749
31	753
32	755
33	758
34	763
35	766
36	767
37	771
38	778
39	779
40	781
41	785
42	789
43	791
44	793
45	794
46	799
47	802
48	803
49	807
50	813
51	815
52	817

n	a(n)
1	1
2	11
3	13
4	17
5	19
6	23
7	29
8	31
9	37
10	41
11	43
12	47
13	53
14	59
15	61
16	67
17	71
18	73
19	79
20	121
21	169
22	289
23	361
24	529
25	731
26	734
27	737
28	745
29	746
30	749
31	753
32	755
33	758
34	763
35	766
36	767
37	771
38	778
39	779
40	781
41	785
42	789
43	791
44	793
45	794
46	799
47	802
48	803
49	807
50	813
51	815
52	817

n	a(n)
1	1
2	11
3	13
4	17
5	19
6	23
7	29
8	31
9	37
10	41
11	43
12	47
13	53
14	59
15	61
16	67
17	71
18	73
19	79
20	121
21	169
22	289
23	361
24	529
25	731
26	734
27	737
28	745
29	746
30	749
31	753
32	755
33	758
34	763
35	766
36	767
37	771
38	778
39	779
40	781
41	785
42	789
43	791
44	793
45	794
46	799
47	802
48	803
49	807
50	813
51	815
52	817