A080588 - cp's OEIS frontend

A080588 a(n) is the smallest nonnegative integer which is consistent with sequence being monotonically increasing and satisfying a(a(n)) = 4n.

n	a(n)
0	0
1	2
2	4
3	5
4	8
5	12
6	13
7	14
8	16
9	17
10	18
11	19
12	20
13	24
14	28
15	29
16	32
17	36
18	40
19	44
20	48
21	49
22	50
23	51
24	52
25	53
26	54
27	55
28	56
29	60
30	61
31	62
32	64
33	65
34	66
35	67
36	68
37	69
38	70
39	71
40	72
41	73
42	74
43	75
44	76
45	77
46	78
47	79
48	80
49	84
50	88
51	92
52	96
53	100
54	104
55	108
56	112
57	113
58	114
59	115
60	116
61	120
62	124
63	125

[0, 2, 4, 5, 8, 12, 13, 14, 16, 17, 18, 19, 20, 24, 28, 29, 32, 36, 40, 44, 48, 49, 50, 51, 52, 53, 54, 55, 56, 60, 61, 62, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 84, 88, 92, 96, 100, 104, 108, 112, 113, 114, 115, 116, 120, 124, 125]

cp's OEIS Frontend

A080588 a(n) is the smallest nonnegative integer which is consistent with sequence being monotonically increasing and satisfying a(a(n)) = 4n.

Table of values

List of values

n	a(n)
0	0
1	2
2	4
3	5
4	8
5	12
6	13
7	14
8	16
9	17
10	18
11	19
12	20
13	24
14	28
15	29
16	32
17	36
18	40
19	44
20	48
21	49
22	50
23	51
24	52
25	53
26	54
27	55
28	56
29	60
30	61
31	62
32	64
33	65
34	66
35	67
36	68
37	69
38	70
39	71
40	72
41	73
42	74
43	75
44	76
45	77
46	78
47	79
48	80
49	84
50	88
51	92
52	96
53	100
54	104
55	108
56	112
57	113
58	114
59	115
60	116
61	120
62	124
63	125

n	a(n)
0	0
1	2
2	4
3	5
4	8
5	12
6	13
7	14
8	16
9	17
10	18
11	19
12	20
13	24
14	28
15	29
16	32
17	36
18	40
19	44
20	48
21	49
22	50
23	51
24	52
25	53
26	54
27	55
28	56
29	60
30	61
31	62
32	64
33	65
34	66
35	67
36	68
37	69
38	70
39	71
40	72
41	73
42	74
43	75
44	76
45	77
46	78
47	79
48	80
49	84
50	88
51	92
52	96
53	100
54	104
55	108
56	112
57	113
58	114
59	115
60	116
61	120
62	124
63	125

n	a(n)
0	0
1	2
2	4
3	5
4	8
5	12
6	13
7	14
8	16
9	17
10	18
11	19
12	20
13	24
14	28
15	29
16	32
17	36
18	40
19	44
20	48
21	49
22	50
23	51
24	52
25	53
26	54
27	55
28	56
29	60
30	61
31	62
32	64
33	65
34	66
35	67
36	68
37	69
38	70
39	71
40	72
41	73
42	74
43	75
44	76
45	77
46	78
47	79
48	80
49	84
50	88
51	92
52	96
53	100
54	104
55	108
56	112
57	113
58	114
59	115
60	116
61	120
62	124
63	125