A279430 - cp's OEIS frontend

A279430 Numbers k such that k^2 has an odd number of digits in base 2 and the middle digit is 0.

n	a(n)
1	0
2	2
3	4
4	5
5	8
6	9
7	10
8	16
9	17
10	18
11	19
12	22
13	32
14	33
15	34
16	35
17	36
18	37
19	40
20	41
21	44
22	64
23	65
24	66
25	67
26	68
27	69
28	70
29	71
30	76
31	77
32	80
33	81
34	84
35	85
36	87
37	90
38	128
39	129
40	130
41	131
42	132
43	133
44	134
45	135
46	136
47	137
48	138
49	139
50	144
51	145
52	146
53	147
54	151
55	152
56	153
57	156
58	157
59	160
60	161
61	164

[0, 2, 4, 5, 8, 9, 10, 16, 17, 18, 19, 22, 32, 33, 34, 35, 36, 37, 40, 41, 44, 64, 65, 66, 67, 68, 69, 70, 71, 76, 77, 80, 81, 84, 85, 87, 90, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 144, 145, 146, 147, 151, 152, 153, 156, 157, 160, 161, 164]

cp's OEIS Frontend

A279430 Numbers k such that k^2 has an odd number of digits in base 2 and the middle digit is 0.

Table of values

List of values

n	a(n)
1	0
2	2
3	4
4	5
5	8
6	9
7	10
8	16
9	17
10	18
11	19
12	22
13	32
14	33
15	34
16	35
17	36
18	37
19	40
20	41
21	44
22	64
23	65
24	66
25	67
26	68
27	69
28	70
29	71
30	76
31	77
32	80
33	81
34	84
35	85
36	87
37	90
38	128
39	129
40	130
41	131
42	132
43	133
44	134
45	135
46	136
47	137
48	138
49	139
50	144
51	145
52	146
53	147
54	151
55	152
56	153
57	156
58	157
59	160
60	161
61	164

n	a(n)
1	0
2	2
3	4
4	5
5	8
6	9
7	10
8	16
9	17
10	18
11	19
12	22
13	32
14	33
15	34
16	35
17	36
18	37
19	40
20	41
21	44
22	64
23	65
24	66
25	67
26	68
27	69
28	70
29	71
30	76
31	77
32	80
33	81
34	84
35	85
36	87
37	90
38	128
39	129
40	130
41	131
42	132
43	133
44	134
45	135
46	136
47	137
48	138
49	139
50	144
51	145
52	146
53	147
54	151
55	152
56	153
57	156
58	157
59	160
60	161
61	164

n	a(n)
1	0
2	2
3	4
4	5
5	8
6	9
7	10
8	16
9	17
10	18
11	19
12	22
13	32
14	33
15	34
16	35
17	36
18	37
19	40
20	41
21	44
22	64
23	65
24	66
25	67
26	68
27	69
28	70
29	71
30	76
31	77
32	80
33	81
34	84
35	85
36	87
37	90
38	128
39	129
40	130
41	131
42	132
43	133
44	134
45	135
46	136
47	137
48	138
49	139
50	144
51	145
52	146
53	147
54	151
55	152
56	153
57	156
58	157
59	160
60	161
61	164