A282028 - cp's OEIS frontend

A282028 If n is prime then a(n) = 2n, otherwise a(n) is the smallest missing number.

n	a(n)
0	0
1	1
2	4
3	6
4	2
5	10
6	3
7	14
8	5
9	7
10	8
11	22
12	9
13	26
14	11
15	12
16	13
17	34
18	15
19	38
20	16
21	17
22	18
23	46
24	19
25	20
26	21
27	23
28	24
29	58
30	25
31	62
32	27
33	28
34	29
35	30
36	31
37	74
38	32
39	33
40	35
41	82
42	36
43	86
44	37
45	39
46	40
47	94
48	41
49	42
50	43
51	44
52	45
53	106
54	47
55	48
56	49
57	50
58	51
59	118
60	52
61	122
62	53
63	54
64	55
65	56
66	57
67	134
68	59
69	60
70	61
71	142
72	63
73	146
74	64
75	65

[0, 1, 4, 6, 2, 10, 3, 14, 5, 7, 8, 22, 9, 26, 11, 12, 13, 34, 15, 38, 16, 17, 18, 46, 19, 20, 21, 23, 24, 58, 25, 62, 27, 28, 29, 30, 31, 74, 32, 33, 35, 82, 36, 86, 37, 39, 40, 94, 41, 42, 43, 44, 45, 106, 47, 48, 49, 50, 51, 118, 52, 122, 53, 54, 55, 56, 57, 134, 59, 60, 61, 142, 63, 146, 64, 65]

cp's OEIS Frontend

A282028 If n is prime then a(n) = 2n, otherwise a(n) is the smallest missing number.

Table of values

List of values

n	a(n)
0	0
1	1
2	4
3	6
4	2
5	10
6	3
7	14
8	5
9	7
10	8
11	22
12	9
13	26
14	11
15	12
16	13
17	34
18	15
19	38
20	16
21	17
22	18
23	46
24	19
25	20
26	21
27	23
28	24
29	58
30	25
31	62
32	27
33	28
34	29
35	30
36	31
37	74
38	32
39	33
40	35
41	82
42	36
43	86
44	37
45	39
46	40
47	94
48	41
49	42
50	43
51	44
52	45
53	106
54	47
55	48
56	49
57	50
58	51
59	118
60	52
61	122
62	53
63	54
64	55
65	56
66	57
67	134
68	59
69	60
70	61
71	142
72	63
73	146
74	64
75	65

n	a(n)
0	0
1	1
2	4
3	6
4	2
5	10
6	3
7	14
8	5
9	7
10	8
11	22
12	9
13	26
14	11
15	12
16	13
17	34
18	15
19	38
20	16
21	17
22	18
23	46
24	19
25	20
26	21
27	23
28	24
29	58
30	25
31	62
32	27
33	28
34	29
35	30
36	31
37	74
38	32
39	33
40	35
41	82
42	36
43	86
44	37
45	39
46	40
47	94
48	41
49	42
50	43
51	44
52	45
53	106
54	47
55	48
56	49
57	50
58	51
59	118
60	52
61	122
62	53
63	54
64	55
65	56
66	57
67	134
68	59
69	60
70	61
71	142
72	63
73	146
74	64
75	65

n	a(n)
0	0
1	1
2	4
3	6
4	2
5	10
6	3
7	14
8	5
9	7
10	8
11	22
12	9
13	26
14	11
15	12
16	13
17	34
18	15
19	38
20	16
21	17
22	18
23	46
24	19
25	20
26	21
27	23
28	24
29	58
30	25
31	62
32	27
33	28
34	29
35	30
36	31
37	74
38	32
39	33
40	35
41	82
42	36
43	86
44	37
45	39
46	40
47	94
48	41
49	42
50	43
51	44
52	45
53	106
54	47
55	48
56	49
57	50
58	51
59	118
60	52
61	122
62	53
63	54
64	55
65	56
66	57
67	134
68	59
69	60
70	61
71	142
72	63
73	146
74	64
75	65