A372297 - cp's OEIS frontend

A372297 Limit of the recursion B(k) = T[k](B(k-1)), where B(1) = (1,2,3,4,5,...) and T[k] is the transformation that permutes the entries k(2i-1) and k(2i) for all positive integers i, if k is prime.

n	a(n)
1	1
2	4
3	8
4	2
5	12
6	3
7	16
8	6
9	10
10	5
11	24
12	9
13	28
14	7
15	18
16	14
17	36
18	15
19	40
20	20
21	26
22	11
23	48
24	21
25	27
26	13
27	32
28	22
29	60
30	25
31	64
32	30
33	42
34	17
35	39
36	33
37	76
38	19
39	50
40	35
41	84
42	38
43	88
44	34
45	52
46	23
47	96
48	45
49	54
50	46
51	66
52	44
53	108
54	51
55	63
56	49
57	74
58	29
59	120
60	55
61	124
62	31
63	65
64	62
65	75

[1, 4, 8, 2, 12, 3, 16, 6, 10, 5, 24, 9, 28, 7, 18, 14, 36, 15, 40, 20, 26, 11, 48, 21, 27, 13, 32, 22, 60, 25, 64, 30, 42, 17, 39, 33, 76, 19, 50, 35, 84, 38, 88, 34, 52, 23, 96, 45, 54, 46, 66, 44, 108, 51, 63, 49, 74, 29, 120, 55, 124, 31, 65, 62, 75]

cp's OEIS Frontend

A372297 Limit of the recursion B(k) = T[k](B(k-1)), where B(1) = (1,2,3,4,5,...) and T[k] is the transformation that permutes the entries k(2i-1) and k(2i) for all positive integers i, if k is prime.

Table of values

List of values

n	a(n)
1	1
2	4
3	8
4	2
5	12
6	3
7	16
8	6
9	10
10	5
11	24
12	9
13	28
14	7
15	18
16	14
17	36
18	15
19	40
20	20
21	26
22	11
23	48
24	21
25	27
26	13
27	32
28	22
29	60
30	25
31	64
32	30
33	42
34	17
35	39
36	33
37	76
38	19
39	50
40	35
41	84
42	38
43	88
44	34
45	52
46	23
47	96
48	45
49	54
50	46
51	66
52	44
53	108
54	51
55	63
56	49
57	74
58	29
59	120
60	55
61	124
62	31
63	65
64	62
65	75

n	a(n)
1	1
2	4
3	8
4	2
5	12
6	3
7	16
8	6
9	10
10	5
11	24
12	9
13	28
14	7
15	18
16	14
17	36
18	15
19	40
20	20
21	26
22	11
23	48
24	21
25	27
26	13
27	32
28	22
29	60
30	25
31	64
32	30
33	42
34	17
35	39
36	33
37	76
38	19
39	50
40	35
41	84
42	38
43	88
44	34
45	52
46	23
47	96
48	45
49	54
50	46
51	66
52	44
53	108
54	51
55	63
56	49
57	74
58	29
59	120
60	55
61	124
62	31
63	65
64	62
65	75

n	a(n)
1	1
2	4
3	8
4	2
5	12
6	3
7	16
8	6
9	10
10	5
11	24
12	9
13	28
14	7
15	18
16	14
17	36
18	15
19	40
20	20
21	26
22	11
23	48
24	21
25	27
26	13
27	32
28	22
29	60
30	25
31	64
32	30
33	42
34	17
35	39
36	33
37	76
38	19
39	50
40	35
41	84
42	38
43	88
44	34
45	52
46	23
47	96
48	45
49	54
50	46
51	66
52	44
53	108
54	51
55	63
56	49
57	74
58	29
59	120
60	55
61	124
62	31
63	65
64	62
65	75