A257794 - cp's OEIS frontend

A257794 Lexicographically earliest injective sequence such that a(n) divides a(a(n)).

n	a(n)
1	2
2	4
3	1
4	8
5	6
6	12
7	9
8	16
9	18
10	11
11	22
12	24
13	14
14	28
15	17
16	32
17	34
18	36
19	20
20	40
21	23
22	44
23	46
24	48
25	26
26	52
27	29
28	56
29	58
30	31
31	62
32	64
33	35
34	68
35	70
36	72
37	38
38	76
39	41
40	80
41	82
42	43
43	86
44	88
45	47
46	92
47	94
48	96
49	50
50	100
51	53
52	104
53	106
54	55
55	110
56	112
57	59
58	116
59	118
60	61
61	122
62	124
63	65
64	128

[2, 4, 1, 8, 6, 12, 9, 16, 18, 11, 22, 24, 14, 28, 17, 32, 34, 36, 20, 40, 23, 44, 46, 48, 26, 52, 29, 56, 58, 31, 62, 64, 35, 68, 70, 72, 38, 76, 41, 80, 82, 43, 86, 88, 47, 92, 94, 96, 50, 100, 53, 104, 106, 55, 110, 112, 59, 116, 118, 61, 122, 124, 65, 128]

cp's OEIS Frontend

A257794 Lexicographically earliest injective sequence such that a(n) divides a(a(n)).

Table of values

List of values

n	a(n)
1	2
2	4
3	1
4	8
5	6
6	12
7	9
8	16
9	18
10	11
11	22
12	24
13	14
14	28
15	17
16	32
17	34
18	36
19	20
20	40
21	23
22	44
23	46
24	48
25	26
26	52
27	29
28	56
29	58
30	31
31	62
32	64
33	35
34	68
35	70
36	72
37	38
38	76
39	41
40	80
41	82
42	43
43	86
44	88
45	47
46	92
47	94
48	96
49	50
50	100
51	53
52	104
53	106
54	55
55	110
56	112
57	59
58	116
59	118
60	61
61	122
62	124
63	65
64	128

n	a(n)
1	2
2	4
3	1
4	8
5	6
6	12
7	9
8	16
9	18
10	11
11	22
12	24
13	14
14	28
15	17
16	32
17	34
18	36
19	20
20	40
21	23
22	44
23	46
24	48
25	26
26	52
27	29
28	56
29	58
30	31
31	62
32	64
33	35
34	68
35	70
36	72
37	38
38	76
39	41
40	80
41	82
42	43
43	86
44	88
45	47
46	92
47	94
48	96
49	50
50	100
51	53
52	104
53	106
54	55
55	110
56	112
57	59
58	116
59	118
60	61
61	122
62	124
63	65
64	128

n	a(n)
1	2
2	4
3	1
4	8
5	6
6	12
7	9
8	16
9	18
10	11
11	22
12	24
13	14
14	28
15	17
16	32
17	34
18	36
19	20
20	40
21	23
22	44
23	46
24	48
25	26
26	52
27	29
28	56
29	58
30	31
31	62
32	64
33	35
34	68
35	70
36	72
37	38
38	76
39	41
40	80
41	82
42	43
43	86
44	88
45	47
46	92
47	94
48	96
49	50
50	100
51	53
52	104
53	106
54	55
55	110
56	112
57	59
58	116
59	118
60	61
61	122
62	124
63	65
64	128