A083795 - cp's OEIS frontend

A083795 Numbers k such that k and k-1 have the same number of divisors. Numbers not included in A083794.

n	a(n)
1	3
2	15
3	22
4	27
5	34
6	35
7	39
8	45
9	58
10	76
11	86
12	87
13	94
14	95
15	99
16	105
17	117
18	119
19	123
20	134
21	136
22	142
23	143
24	146
25	148
26	159
27	172
28	178
29	190
30	202
31	203
32	206
33	214
34	215
35	218
36	219
37	231
38	232
39	243
40	244
41	245
42	254
43	286
44	297
45	299
46	302
47	303
48	327
49	333
50	335
51	345
52	375
53	376
54	382
55	388

[3, 15, 22, 27, 34, 35, 39, 45, 58, 76, 86, 87, 94, 95, 99, 105, 117, 119, 123, 134, 136, 142, 143, 146, 148, 159, 172, 178, 190, 202, 203, 206, 214, 215, 218, 219, 231, 232, 243, 244, 245, 254, 286, 297, 299, 302, 303, 327, 333, 335, 345, 375, 376, 382, 388]

cp's OEIS Frontend

A083795 Numbers k such that k and k-1 have the same number of divisors. Numbers not included in A083794.

Table of values

List of values

n	a(n)
1	3
2	15
3	22
4	27
5	34
6	35
7	39
8	45
9	58
10	76
11	86
12	87
13	94
14	95
15	99
16	105
17	117
18	119
19	123
20	134
21	136
22	142
23	143
24	146
25	148
26	159
27	172
28	178
29	190
30	202
31	203
32	206
33	214
34	215
35	218
36	219
37	231
38	232
39	243
40	244
41	245
42	254
43	286
44	297
45	299
46	302
47	303
48	327
49	333
50	335
51	345
52	375
53	376
54	382
55	388

n	a(n)
1	3
2	15
3	22
4	27
5	34
6	35
7	39
8	45
9	58
10	76
11	86
12	87
13	94
14	95
15	99
16	105
17	117
18	119
19	123
20	134
21	136
22	142
23	143
24	146
25	148
26	159
27	172
28	178
29	190
30	202
31	203
32	206
33	214
34	215
35	218
36	219
37	231
38	232
39	243
40	244
41	245
42	254
43	286
44	297
45	299
46	302
47	303
48	327
49	333
50	335
51	345
52	375
53	376
54	382
55	388

n	a(n)
1	3
2	15
3	22
4	27
5	34
6	35
7	39
8	45
9	58
10	76
11	86
12	87
13	94
14	95
15	99
16	105
17	117
18	119
19	123
20	134
21	136
22	142
23	143
24	146
25	148
26	159
27	172
28	178
29	190
30	202
31	203
32	206
33	214
34	215
35	218
36	219
37	231
38	232
39	243
40	244
41	245
42	254
43	286
44	297
45	299
46	302
47	303
48	327
49	333
50	335
51	345
52	375
53	376
54	382
55	388