A257727 - cp's OEIS frontend

A257727 Permutation of natural numbers: a(1) = 1, a(oddprime(n)) = 1 + 2a(n), a(not_an_oddprime(n)) = 2a(n-1).

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
10	12
11	9
12	14
13	11
14	16
15	20
16	24
17	13
18	18
19	15
20	28
21	22
22	32
23	17
24	40
25	48
26	26
27	36
28	30
29	21
30	56
31	25
32	44
33	64
34	34
35	80
36	96
37	19
38	52
39	72
40	60
41	29
42	42
43	23
44	112
45	50
46	88
47	33
48	128
49	68
50	160
51	192
52	38
53	41
54	104
55	144
56	120
57	58
58	84
59	49
60	46
61	27
62	224
63	100
64	176
65	66
66	256
67	37
68	136
69	320
70	384
71	31
72	76
73	57
74	82
75	208
76	288
77	240
78	116
79	45

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 9, 14, 11, 16, 20, 24, 13, 18, 15, 28, 22, 32, 17, 40, 48, 26, 36, 30, 21, 56, 25, 44, 64, 34, 80, 96, 19, 52, 72, 60, 29, 42, 23, 112, 50, 88, 33, 128, 68, 160, 192, 38, 41, 104, 144, 120, 58, 84, 49, 46, 27, 224, 100, 176, 66, 256, 37, 136, 320, 384, 31, 76, 57, 82, 208, 288, 240, 116, 45]

cp's OEIS Frontend

A257727 Permutation of natural numbers: a(1) = 1, a(oddprime(n)) = 1 + 2a(n), a(not_an_oddprime(n)) = 2a(n-1).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
10	12
11	9
12	14
13	11
14	16
15	20
16	24
17	13
18	18
19	15
20	28
21	22
22	32
23	17
24	40
25	48
26	26
27	36
28	30
29	21
30	56
31	25
32	44
33	64
34	34
35	80
36	96
37	19
38	52
39	72
40	60
41	29
42	42
43	23
44	112
45	50
46	88
47	33
48	128
49	68
50	160
51	192
52	38
53	41
54	104
55	144
56	120
57	58
58	84
59	49
60	46
61	27
62	224
63	100
64	176
65	66
66	256
67	37
68	136
69	320
70	384
71	31
72	76
73	57
74	82
75	208
76	288
77	240
78	116
79	45

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
10	12
11	9
12	14
13	11
14	16
15	20
16	24
17	13
18	18
19	15
20	28
21	22
22	32
23	17
24	40
25	48
26	26
27	36
28	30
29	21
30	56
31	25
32	44
33	64
34	34
35	80
36	96
37	19
38	52
39	72
40	60
41	29
42	42
43	23
44	112
45	50
46	88
47	33
48	128
49	68
50	160
51	192
52	38
53	41
54	104
55	144
56	120
57	58
58	84
59	49
60	46
61	27
62	224
63	100
64	176
65	66
66	256
67	37
68	136
69	320
70	384
71	31
72	76
73	57
74	82
75	208
76	288
77	240
78	116
79	45

cp's OEIS Frontend

A257727 Permutation of natural numbers: a(1) = 1, a(oddprime(n)) = 1 + 2*a(n), a(not_an_oddprime(n)) = 2*a(n-1).

Table of values

List of values

A257727 Permutation of natural numbers: a(1) = 1, a(oddprime(n)) = 1 + 2a(n), a(not_an_oddprime(n)) = 2a(n-1).

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
10	12
11	9
12	14
13	11
14	16
15	20
16	24
17	13
18	18
19	15
20	28
21	22
22	32
23	17
24	40
25	48
26	26
27	36
28	30
29	21
30	56
31	25
32	44
33	64
34	34
35	80
36	96
37	19
38	52
39	72
40	60
41	29
42	42
43	23
44	112
45	50
46	88
47	33
48	128
49	68
50	160
51	192
52	38
53	41
54	104
55	144
56	120
57	58
58	84
59	49
60	46
61	27
62	224
63	100
64	176
65	66
66	256
67	37
68	136
69	320
70	384
71	31
72	76
73	57
74	82
75	208
76	288
77	240
78	116
79	45