A370919 - cp's OEIS frontend

A370919 Positive integers whose ternary representation includes at least one 1, and every 1 is followed by 2.

n	a(n)
1	5
2	15
3	17
4	23
5	45
6	47
7	50
8	51
9	53
10	59
11	69
12	71
13	77
14	135
15	137
16	140
17	141
18	143
19	150
20	152
21	153
22	155
23	158
24	159
25	161
26	167
27	177
28	179
29	185
30	207
31	209
32	212
33	213
34	215
35	221
36	231
37	233
38	239
39	405
40	407
41	410
42	411
43	413
44	420
45	422
46	423
47	425
48	428
49	429
50	431
51	450
52	452
53	455
54	456

[5, 15, 17, 23, 45, 47, 50, 51, 53, 59, 69, 71, 77, 135, 137, 140, 141, 143, 150, 152, 153, 155, 158, 159, 161, 167, 177, 179, 185, 207, 209, 212, 213, 215, 221, 231, 233, 239, 405, 407, 410, 411, 413, 420, 422, 423, 425, 428, 429, 431, 450, 452, 455, 456]

cp's OEIS Frontend

A370919 Positive integers whose ternary representation includes at least one 1, and every 1 is followed by 2.

Table of values

List of values

n	a(n)
1	5
2	15
3	17
4	23
5	45
6	47
7	50
8	51
9	53
10	59
11	69
12	71
13	77
14	135
15	137
16	140
17	141
18	143
19	150
20	152
21	153
22	155
23	158
24	159
25	161
26	167
27	177
28	179
29	185
30	207
31	209
32	212
33	213
34	215
35	221
36	231
37	233
38	239
39	405
40	407
41	410
42	411
43	413
44	420
45	422
46	423
47	425
48	428
49	429
50	431
51	450
52	452
53	455
54	456

n	a(n)
1	5
2	15
3	17
4	23
5	45
6	47
7	50
8	51
9	53
10	59
11	69
12	71
13	77
14	135
15	137
16	140
17	141
18	143
19	150
20	152
21	153
22	155
23	158
24	159
25	161
26	167
27	177
28	179
29	185
30	207
31	209
32	212
33	213
34	215
35	221
36	231
37	233
38	239
39	405
40	407
41	410
42	411
43	413
44	420
45	422
46	423
47	425
48	428
49	429
50	431
51	450
52	452
53	455
54	456

n	a(n)
1	5
2	15
3	17
4	23
5	45
6	47
7	50
8	51
9	53
10	59
11	69
12	71
13	77
14	135
15	137
16	140
17	141
18	143
19	150
20	152
21	153
22	155
23	158
24	159
25	161
26	167
27	177
28	179
29	185
30	207
31	209
32	212
33	213
34	215
35	221
36	231
37	233
38	239
39	405
40	407
41	410
42	411
43	413
44	420
45	422
46	423
47	425
48	428
49	429
50	431
51	450
52	452
53	455
54	456