A066250 - cp's OEIS frontend

A066250 a(n) = if n+1 is prime then A049084(n+1)2 - 1 else A066246(n+1)2.

n	a(n)
1	1
2	3
3	2
4	5
5	4
6	7
7	6
8	8
9	10
10	9
11	12
12	11
13	14
14	16
15	18
16	13
17	20
18	15
19	22
20	24
21	26
22	17
23	28
24	30
25	32
26	34
27	36
28	19
29	38
30	21
31	40
32	42
33	44
34	46
35	48
36	23
37	50
38	52
39	54
40	25
41	56
42	27
43	58
44	60
45	62
46	29
47	64
48	66
49	68
50	70
51	72
52	31
53	74
54	76
55	78
56	80
57	82
58	33
59	84
60	35
61	86
62	88
63	90
64	92
65	94
66	37
67	96
68	98
69	100
70	39
71	102

[1, 3, 2, 5, 4, 7, 6, 8, 10, 9, 12, 11, 14, 16, 18, 13, 20, 15, 22, 24, 26, 17, 28, 30, 32, 34, 36, 19, 38, 21, 40, 42, 44, 46, 48, 23, 50, 52, 54, 25, 56, 27, 58, 60, 62, 29, 64, 66, 68, 70, 72, 31, 74, 76, 78, 80, 82, 33, 84, 35, 86, 88, 90, 92, 94, 37, 96, 98, 100, 39, 102]

cp's OEIS Frontend

A066250 a(n) = if n+1 is prime then A049084(n+1)2 - 1 else A066246(n+1)2.

Table of values

List of values

n	a(n)
1	1
2	3
3	2
4	5
5	4
6	7
7	6
8	8
9	10
10	9
11	12
12	11
13	14
14	16
15	18
16	13
17	20
18	15
19	22
20	24
21	26
22	17
23	28
24	30
25	32
26	34
27	36
28	19
29	38
30	21
31	40
32	42
33	44
34	46
35	48
36	23
37	50
38	52
39	54
40	25
41	56
42	27
43	58
44	60
45	62
46	29
47	64
48	66
49	68
50	70
51	72
52	31
53	74
54	76
55	78
56	80
57	82
58	33
59	84
60	35
61	86
62	88
63	90
64	92
65	94
66	37
67	96
68	98
69	100
70	39
71	102

n	a(n)
1	1
2	3
3	2
4	5
5	4
6	7
7	6
8	8
9	10
10	9
11	12
12	11
13	14
14	16
15	18
16	13
17	20
18	15
19	22
20	24
21	26
22	17
23	28
24	30
25	32
26	34
27	36
28	19
29	38
30	21
31	40
32	42
33	44
34	46
35	48
36	23
37	50
38	52
39	54
40	25
41	56
42	27
43	58
44	60
45	62
46	29
47	64
48	66
49	68
50	70
51	72
52	31
53	74
54	76
55	78
56	80
57	82
58	33
59	84
60	35
61	86
62	88
63	90
64	92
65	94
66	37
67	96
68	98
69	100
70	39
71	102

cp's OEIS Frontend

A066250 a(n) = if n+1 is prime then A049084(n+1)*2 - 1 else A066246(n+1)*2.

Table of values

List of values

A066250 a(n) = if n+1 is prime then A049084(n+1)2 - 1 else A066246(n+1)2.

n	a(n)
1	1
2	3
3	2
4	5
5	4
6	7
7	6
8	8
9	10
10	9
11	12
12	11
13	14
14	16
15	18
16	13
17	20
18	15
19	22
20	24
21	26
22	17
23	28
24	30
25	32
26	34
27	36
28	19
29	38
30	21
31	40
32	42
33	44
34	46
35	48
36	23
37	50
38	52
39	54
40	25
41	56
42	27
43	58
44	60
45	62
46	29
47	64
48	66
49	68
50	70
51	72
52	31
53	74
54	76
55	78
56	80
57	82
58	33
59	84
60	35
61	86
62	88
63	90
64	92
65	94
66	37
67	96
68	98
69	100
70	39
71	102