A280651 - cp's OEIS frontend

A280651 Numbers k such that k^3 has an odd number of digits in base 2 and the middle digit is 1.

n	a(n)
1	1
2	5
3	7
4	11
5	18
6	19
7	20
8	26
9	27
10	28
11	41
12	42
13	45
14	47
15	49
16	66
17	67
18	69
19	70
20	71
21	72
22	73
23	74
24	75
25	76
26	77
27	103
28	106
29	110
30	111
31	113
32	115
33	119
34	120
35	122
36	123
37	124
38	125
39	126
40	162
41	164
42	165
43	166
44	168
45	171
46	177
47	178
48	180
49	181
50	182
51	184
52	185
53	190
54	194
55	197
56	199
57	201
58	259

[1, 5, 7, 11, 18, 19, 20, 26, 27, 28, 41, 42, 45, 47, 49, 66, 67, 69, 70, 71, 72, 73, 74, 75, 76, 77, 103, 106, 110, 111, 113, 115, 119, 120, 122, 123, 124, 125, 126, 162, 164, 165, 166, 168, 171, 177, 178, 180, 181, 182, 184, 185, 190, 194, 197, 199, 201, 259]

cp's OEIS Frontend

A280651 Numbers k such that k^3 has an odd number of digits in base 2 and the middle digit is 1.

Table of values

List of values

n	a(n)
1	1
2	5
3	7
4	11
5	18
6	19
7	20
8	26
9	27
10	28
11	41
12	42
13	45
14	47
15	49
16	66
17	67
18	69
19	70
20	71
21	72
22	73
23	74
24	75
25	76
26	77
27	103
28	106
29	110
30	111
31	113
32	115
33	119
34	120
35	122
36	123
37	124
38	125
39	126
40	162
41	164
42	165
43	166
44	168
45	171
46	177
47	178
48	180
49	181
50	182
51	184
52	185
53	190
54	194
55	197
56	199
57	201
58	259

n	a(n)
1	1
2	5
3	7
4	11
5	18
6	19
7	20
8	26
9	27
10	28
11	41
12	42
13	45
14	47
15	49
16	66
17	67
18	69
19	70
20	71
21	72
22	73
23	74
24	75
25	76
26	77
27	103
28	106
29	110
30	111
31	113
32	115
33	119
34	120
35	122
36	123
37	124
38	125
39	126
40	162
41	164
42	165
43	166
44	168
45	171
46	177
47	178
48	180
49	181
50	182
51	184
52	185
53	190
54	194
55	197
56	199
57	201
58	259

n	a(n)
1	1
2	5
3	7
4	11
5	18
6	19
7	20
8	26
9	27
10	28
11	41
12	42
13	45
14	47
15	49
16	66
17	67
18	69
19	70
20	71
21	72
22	73
23	74
24	75
25	76
26	77
27	103
28	106
29	110
30	111
31	113
32	115
33	119
34	120
35	122
36	123
37	124
38	125
39	126
40	162
41	164
42	165
43	166
44	168
45	171
46	177
47	178
48	180
49	181
50	182
51	184
52	185
53	190
54	194
55	197
56	199
57	201
58	259