A293990 - cp's OEIS frontend

A293990 a(n) = (3*n + ((n-2) mod 4))/2.

n	a(n)
0	1
1	3
2	3
3	5
4	7
5	9
6	9
7	11
8	13
9	15
10	15
11	17
12	19
13	21
14	21
15	23
16	25
17	27
18	27
19	29
20	31
21	33
22	33
23	35
24	37
25	39
26	39
27	41
28	43
29	45
30	45
31	47
32	49
33	51
34	51
35	53
36	55
37	57
38	57
39	59
40	61
41	63
42	63
43	65
44	67
45	69
46	69
47	71
48	73
49	75
50	75
51	77
52	79
53	81
54	81
55	83
56	85
57	87
58	87
59	89
60	91
61	93
62	93

[1, 3, 3, 5, 7, 9, 9, 11, 13, 15, 15, 17, 19, 21, 21, 23, 25, 27, 27, 29, 31, 33, 33, 35, 37, 39, 39, 41, 43, 45, 45, 47, 49, 51, 51, 53, 55, 57, 57, 59, 61, 63, 63, 65, 67, 69, 69, 71, 73, 75, 75, 77, 79, 81, 81, 83, 85, 87, 87, 89, 91, 93, 93]

cp's OEIS Frontend

A293990 a(n) = (3*n + ((n-2) mod 4))/2.

Table of values

List of values

n	a(n)
0	1
1	3
2	3
3	5
4	7
5	9
6	9
7	11
8	13
9	15
10	15
11	17
12	19
13	21
14	21
15	23
16	25
17	27
18	27
19	29
20	31
21	33
22	33
23	35
24	37
25	39
26	39
27	41
28	43
29	45
30	45
31	47
32	49
33	51
34	51
35	53
36	55
37	57
38	57
39	59
40	61
41	63
42	63
43	65
44	67
45	69
46	69
47	71
48	73
49	75
50	75
51	77
52	79
53	81
54	81
55	83
56	85
57	87
58	87
59	89
60	91
61	93
62	93

n	a(n)
0	1
1	3
2	3
3	5
4	7
5	9
6	9
7	11
8	13
9	15
10	15
11	17
12	19
13	21
14	21
15	23
16	25
17	27
18	27
19	29
20	31
21	33
22	33
23	35
24	37
25	39
26	39
27	41
28	43
29	45
30	45
31	47
32	49
33	51
34	51
35	53
36	55
37	57
38	57
39	59
40	61
41	63
42	63
43	65
44	67
45	69
46	69
47	71
48	73
49	75
50	75
51	77
52	79
53	81
54	81
55	83
56	85
57	87
58	87
59	89
60	91
61	93
62	93

n	a(n)
0	1
1	3
2	3
3	5
4	7
5	9
6	9
7	11
8	13
9	15
10	15
11	17
12	19
13	21
14	21
15	23
16	25
17	27
18	27
19	29
20	31
21	33
22	33
23	35
24	37
25	39
26	39
27	41
28	43
29	45
30	45
31	47
32	49
33	51
34	51
35	53
36	55
37	57
38	57
39	59
40	61
41	63
42	63
43	65
44	67
45	69
46	69
47	71
48	73
49	75
50	75
51	77
52	79
53	81
54	81
55	83
56	85
57	87
58	87
59	89
60	91
61	93
62	93