A033053 - cp's OEIS frontend

A033053 Numbers whose base-2 representation Sum_{i=0..m} d(i)*2^i has d(i)=1 when i != m mod 2.

n	a(n)
1	1
2	3
3	6
4	7
5	13
6	15
7	26
8	27
9	30
10	31
11	53
12	55
13	61
14	63
15	106
16	107
17	110
18	111
19	122
20	123
21	126
22	127
23	213
24	215
25	221
26	223
27	245
28	247
29	253
30	255
31	426
32	427
33	430
34	431
35	442
36	443
37	446
38	447
39	490
40	491
41	494
42	495
43	506
44	507
45	510
46	511
47	853
48	855
49	861
50	863

[1, 3, 6, 7, 13, 15, 26, 27, 30, 31, 53, 55, 61, 63, 106, 107, 110, 111, 122, 123, 126, 127, 213, 215, 221, 223, 245, 247, 253, 255, 426, 427, 430, 431, 442, 443, 446, 447, 490, 491, 494, 495, 506, 507, 510, 511, 853, 855, 861, 863]

cp's OEIS Frontend

A033053 Numbers whose base-2 representation Sum_{i=0..m} d(i)*2^i has d(i)=1 when i != m mod 2.

Table of values

List of values

n	a(n)
1	1
2	3
3	6
4	7
5	13
6	15
7	26
8	27
9	30
10	31
11	53
12	55
13	61
14	63
15	106
16	107
17	110
18	111
19	122
20	123
21	126
22	127
23	213
24	215
25	221
26	223
27	245
28	247
29	253
30	255
31	426
32	427
33	430
34	431
35	442
36	443
37	446
38	447
39	490
40	491
41	494
42	495
43	506
44	507
45	510
46	511
47	853
48	855
49	861
50	863

n	a(n)
1	1
2	3
3	6
4	7
5	13
6	15
7	26
8	27
9	30
10	31
11	53
12	55
13	61
14	63
15	106
16	107
17	110
18	111
19	122
20	123
21	126
22	127
23	213
24	215
25	221
26	223
27	245
28	247
29	253
30	255
31	426
32	427
33	430
34	431
35	442
36	443
37	446
38	447
39	490
40	491
41	494
42	495
43	506
44	507
45	510
46	511
47	853
48	855
49	861
50	863

n	a(n)
1	1
2	3
3	6
4	7
5	13
6	15
7	26
8	27
9	30
10	31
11	53
12	55
13	61
14	63
15	106
16	107
17	110
18	111
19	122
20	123
21	126
22	127
23	213
24	215
25	221
26	223
27	245
28	247
29	253
30	255
31	426
32	427
33	430
34	431
35	442
36	443
37	446
38	447
39	490
40	491
41	494
42	495
43	506
44	507
45	510
46	511
47	853
48	855
49	861
50	863