A222657 - cp's OEIS frontend

A222657 a(n) = 2 * floor( (2*n + 1) / 3) + 1.

n	a(n)
0	1
1	3
2	3
3	5
4	7
5	7
6	9
7	11
8	11
9	13
10	15
11	15
12	17
13	19
14	19
15	21
16	23
17	23
18	25
19	27
20	27
21	29
22	31
23	31
24	33
25	35
26	35
27	37
28	39
29	39
30	41
31	43
32	43
33	45
34	47
35	47
36	49
37	51
38	51
39	53
40	55
41	55
42	57
43	59
44	59
45	61
46	63
47	63
48	65
49	67
50	67
51	69
52	71
53	71
54	73
55	75
56	75
57	77
58	79
59	79
60	81
61	83
62	83
63	85
64	87
65	87
66	89

[1, 3, 3, 5, 7, 7, 9, 11, 11, 13, 15, 15, 17, 19, 19, 21, 23, 23, 25, 27, 27, 29, 31, 31, 33, 35, 35, 37, 39, 39, 41, 43, 43, 45, 47, 47, 49, 51, 51, 53, 55, 55, 57, 59, 59, 61, 63, 63, 65, 67, 67, 69, 71, 71, 73, 75, 75, 77, 79, 79, 81, 83, 83, 85, 87, 87, 89]

cp's OEIS Frontend

A222657 a(n) = 2 * floor( (2*n + 1) / 3) + 1.

Table of values

List of values

n	a(n)
0	1
1	3
2	3
3	5
4	7
5	7
6	9
7	11
8	11
9	13
10	15
11	15
12	17
13	19
14	19
15	21
16	23
17	23
18	25
19	27
20	27
21	29
22	31
23	31
24	33
25	35
26	35
27	37
28	39
29	39
30	41
31	43
32	43
33	45
34	47
35	47
36	49
37	51
38	51
39	53
40	55
41	55
42	57
43	59
44	59
45	61
46	63
47	63
48	65
49	67
50	67
51	69
52	71
53	71
54	73
55	75
56	75
57	77
58	79
59	79
60	81
61	83
62	83
63	85
64	87
65	87
66	89

n	a(n)
0	1
1	3
2	3
3	5
4	7
5	7
6	9
7	11
8	11
9	13
10	15
11	15
12	17
13	19
14	19
15	21
16	23
17	23
18	25
19	27
20	27
21	29
22	31
23	31
24	33
25	35
26	35
27	37
28	39
29	39
30	41
31	43
32	43
33	45
34	47
35	47
36	49
37	51
38	51
39	53
40	55
41	55
42	57
43	59
44	59
45	61
46	63
47	63
48	65
49	67
50	67
51	69
52	71
53	71
54	73
55	75
56	75
57	77
58	79
59	79
60	81
61	83
62	83
63	85
64	87
65	87
66	89

n	a(n)
0	1
1	3
2	3
3	5
4	7
5	7
6	9
7	11
8	11
9	13
10	15
11	15
12	17
13	19
14	19
15	21
16	23
17	23
18	25
19	27
20	27
21	29
22	31
23	31
24	33
25	35
26	35
27	37
28	39
29	39
30	41
31	43
32	43
33	45
34	47
35	47
36	49
37	51
38	51
39	53
40	55
41	55
42	57
43	59
44	59
45	61
46	63
47	63
48	65
49	67
50	67
51	69
52	71
53	71
54	73
55	75
56	75
57	77
58	79
59	79
60	81
61	83
62	83
63	85
64	87
65	87
66	89