A088721 - cp's OEIS frontend

A088721 Unique monotone sequence satisfying a(a(a(a(n)))) = 2n.

n	a(n)
4	5
5	6
6	7
7	8
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	18
16	20
17	21
18	22
19	23
20	24
21	25
22	26
23	27
24	28
25	29
26	30
27	31
28	32
29	34
30	36
31	38
32	40
33	41
34	42
35	43
36	44
37	45
38	46
39	47
40	48
41	49
42	50
43	51
44	52
45	53
46	54
47	55
48	56
49	57
50	58
51	59
52	60
53	61
54	62
55	63
56	64
57	66
58	68
59	70
60	72
61	74
62	76
63	78
64	80
65	81

[5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 34, 36, 38, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 68, 70, 72, 74, 76, 78, 80, 81]

cp's OEIS Frontend

A088721 Unique monotone sequence satisfying a(a(a(a(n)))) = 2n.

Table of values

List of values

n	a(n)
4	5
5	6
6	7
7	8
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	18
16	20
17	21
18	22
19	23
20	24
21	25
22	26
23	27
24	28
25	29
26	30
27	31
28	32
29	34
30	36
31	38
32	40
33	41
34	42
35	43
36	44
37	45
38	46
39	47
40	48
41	49
42	50
43	51
44	52
45	53
46	54
47	55
48	56
49	57
50	58
51	59
52	60
53	61
54	62
55	63
56	64
57	66
58	68
59	70
60	72
61	74
62	76
63	78
64	80
65	81

n	a(n)
4	5
5	6
6	7
7	8
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	18
16	20
17	21
18	22
19	23
20	24
21	25
22	26
23	27
24	28
25	29
26	30
27	31
28	32
29	34
30	36
31	38
32	40
33	41
34	42
35	43
36	44
37	45
38	46
39	47
40	48
41	49
42	50
43	51
44	52
45	53
46	54
47	55
48	56
49	57
50	58
51	59
52	60
53	61
54	62
55	63
56	64
57	66
58	68
59	70
60	72
61	74
62	76
63	78
64	80
65	81

n	a(n)
4	5
5	6
6	7
7	8
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	18
16	20
17	21
18	22
19	23
20	24
21	25
22	26
23	27
24	28
25	29
26	30
27	31
28	32
29	34
30	36
31	38
32	40
33	41
34	42
35	43
36	44
37	45
38	46
39	47
40	48
41	49
42	50
43	51
44	52
45	53
46	54
47	55
48	56
49	57
50	58
51	59
52	60
53	61
54	62
55	63
56	64
57	66
58	68
59	70
60	72
61	74
62	76
63	78
64	80
65	81