A372589 - cp's OEIS frontend

A372589 Numbers k > 1 such that (greatest binary index of k) + (greatest prime index of k) is even.

n	a(n)
1	3
2	4
3	5
4	9
5	12
6	13
7	14
8	16
9	17
10	20
11	22
12	23
13	25
14	30
15	31
16	35
17	36
18	37
19	38
20	39
21	42
22	43
23	48
24	49
25	52
26	53
27	54
28	56
29	57
30	58
31	61
32	63
33	64
34	66
35	67
36	68
37	69
38	73
39	75
40	77
41	80
42	82
43	83
44	85
45	88
46	90
47	92
48	93
49	94
50	97
51	99
52	100
53	102
54	103
55	109
56	110
57	115
58	118
59	119
60	120
61	121
62	123
63	124

[3, 4, 5, 9, 12, 13, 14, 16, 17, 20, 22, 23, 25, 30, 31, 35, 36, 37, 38, 39, 42, 43, 48, 49, 52, 53, 54, 56, 57, 58, 61, 63, 64, 66, 67, 68, 69, 73, 75, 77, 80, 82, 83, 85, 88, 90, 92, 93, 94, 97, 99, 100, 102, 103, 109, 110, 115, 118, 119, 120, 121, 123, 124]

cp's OEIS Frontend

A372589 Numbers k > 1 such that (greatest binary index of k) + (greatest prime index of k) is even.

Table of values

List of values

n	a(n)
1	3
2	4
3	5
4	9
5	12
6	13
7	14
8	16
9	17
10	20
11	22
12	23
13	25
14	30
15	31
16	35
17	36
18	37
19	38
20	39
21	42
22	43
23	48
24	49
25	52
26	53
27	54
28	56
29	57
30	58
31	61
32	63
33	64
34	66
35	67
36	68
37	69
38	73
39	75
40	77
41	80
42	82
43	83
44	85
45	88
46	90
47	92
48	93
49	94
50	97
51	99
52	100
53	102
54	103
55	109
56	110
57	115
58	118
59	119
60	120
61	121
62	123
63	124

n	a(n)
1	3
2	4
3	5
4	9
5	12
6	13
7	14
8	16
9	17
10	20
11	22
12	23
13	25
14	30
15	31
16	35
17	36
18	37
19	38
20	39
21	42
22	43
23	48
24	49
25	52
26	53
27	54
28	56
29	57
30	58
31	61
32	63
33	64
34	66
35	67
36	68
37	69
38	73
39	75
40	77
41	80
42	82
43	83
44	85
45	88
46	90
47	92
48	93
49	94
50	97
51	99
52	100
53	102
54	103
55	109
56	110
57	115
58	118
59	119
60	120
61	121
62	123
63	124

n	a(n)
1	3
2	4
3	5
4	9
5	12
6	13
7	14
8	16
9	17
10	20
11	22
12	23
13	25
14	30
15	31
16	35
17	36
18	37
19	38
20	39
21	42
22	43
23	48
24	49
25	52
26	53
27	54
28	56
29	57
30	58
31	61
32	63
33	64
34	66
35	67
36	68
37	69
38	73
39	75
40	77
41	80
42	82
43	83
44	85
45	88
46	90
47	92
48	93
49	94
50	97
51	99
52	100
53	102
54	103
55	109
56	110
57	115
58	118
59	119
60	120
61	121
62	123
63	124