A226567 - cp's OEIS frontend

A226567 Numbers k such that 2*k+1 is neither a square nor a prime.

n	a(n)
1	7
2	10
3	13
4	16
5	17
6	19
7	22
8	25
9	27
10	28
11	31
12	32
13	34
14	37
15	38
16	42
17	43
18	45
19	46
20	47
21	49
22	52
23	55
24	57
25	58
26	59
27	61
28	62
29	64
30	66
31	67
32	70
33	71
34	72
35	73
36	76
37	77
38	79
39	80
40	82
41	85
42	87
43	88
44	91
45	92
46	93
47	94
48	97
49	100
50	101
51	102
52	103
53	104
54	106
55	107
56	108
57	109
58	110
59	115
60	117
61	118
62	121

[7, 10, 13, 16, 17, 19, 22, 25, 27, 28, 31, 32, 34, 37, 38, 42, 43, 45, 46, 47, 49, 52, 55, 57, 58, 59, 61, 62, 64, 66, 67, 70, 71, 72, 73, 76, 77, 79, 80, 82, 85, 87, 88, 91, 92, 93, 94, 97, 100, 101, 102, 103, 104, 106, 107, 108, 109, 110, 115, 117, 118, 121]

cp's OEIS Frontend

A226567 Numbers k such that 2*k+1 is neither a square nor a prime.

Table of values

List of values

n	a(n)
1	7
2	10
3	13
4	16
5	17
6	19
7	22
8	25
9	27
10	28
11	31
12	32
13	34
14	37
15	38
16	42
17	43
18	45
19	46
20	47
21	49
22	52
23	55
24	57
25	58
26	59
27	61
28	62
29	64
30	66
31	67
32	70
33	71
34	72
35	73
36	76
37	77
38	79
39	80
40	82
41	85
42	87
43	88
44	91
45	92
46	93
47	94
48	97
49	100
50	101
51	102
52	103
53	104
54	106
55	107
56	108
57	109
58	110
59	115
60	117
61	118
62	121

n	a(n)
1	7
2	10
3	13
4	16
5	17
6	19
7	22
8	25
9	27
10	28
11	31
12	32
13	34
14	37
15	38
16	42
17	43
18	45
19	46
20	47
21	49
22	52
23	55
24	57
25	58
26	59
27	61
28	62
29	64
30	66
31	67
32	70
33	71
34	72
35	73
36	76
37	77
38	79
39	80
40	82
41	85
42	87
43	88
44	91
45	92
46	93
47	94
48	97
49	100
50	101
51	102
52	103
53	104
54	106
55	107
56	108
57	109
58	110
59	115
60	117
61	118
62	121

n	a(n)
1	7
2	10
3	13
4	16
5	17
6	19
7	22
8	25
9	27
10	28
11	31
12	32
13	34
14	37
15	38
16	42
17	43
18	45
19	46
20	47
21	49
22	52
23	55
24	57
25	58
26	59
27	61
28	62
29	64
30	66
31	67
32	70
33	71
34	72
35	73
36	76
37	77
38	79
39	80
40	82
41	85
42	87
43	88
44	91
45	92
46	93
47	94
48	97
49	100
50	101
51	102
52	103
53	104
54	106
55	107
56	108
57	109
58	110
59	115
60	117
61	118
62	121