A115837 - cp's OEIS frontend

A115837 Self-describing sequence. The n-th integer of the sequence indicates how many integers of the sequence are strictly < 3n.

n	a(n)
1	1
2	3
3	4
4	6
5	9
6	10
7	12
8	13
9	14
10	15
11	18
12	19
13	21
14	24
15	27
16	30
17	31
18	32
19	33
20	36
21	37
22	39
23	40
24	41
25	42
26	43
27	44
28	45
29	46
30	47
31	48
32	51
33	54
34	57
35	58
36	59
37	60
38	63
39	64
40	66
41	69
42	72
43	75
44	78
45	81
46	84
47	87
48	90
49	93
50	94
51	95
52	96
53	97
54	98
55	99
56	100
57	101
58	102
59	105
60	108
61	111
62	112
63	113
64	114
65	117
66	118
67	120

[1, 3, 4, 6, 9, 10, 12, 13, 14, 15, 18, 19, 21, 24, 27, 30, 31, 32, 33, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 51, 54, 57, 58, 59, 60, 63, 64, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 105, 108, 111, 112, 113, 114, 117, 118, 120]

cp's OEIS Frontend

A115837 Self-describing sequence. The n-th integer of the sequence indicates how many integers of the sequence are strictly < 3n.

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	6
5	9
6	10
7	12
8	13
9	14
10	15
11	18
12	19
13	21
14	24
15	27
16	30
17	31
18	32
19	33
20	36
21	37
22	39
23	40
24	41
25	42
26	43
27	44
28	45
29	46
30	47
31	48
32	51
33	54
34	57
35	58
36	59
37	60
38	63
39	64
40	66
41	69
42	72
43	75
44	78
45	81
46	84
47	87
48	90
49	93
50	94
51	95
52	96
53	97
54	98
55	99
56	100
57	101
58	102
59	105
60	108
61	111
62	112
63	113
64	114
65	117
66	118
67	120

n	a(n)
1	1
2	3
3	4
4	6
5	9
6	10
7	12
8	13
9	14
10	15
11	18
12	19
13	21
14	24
15	27
16	30
17	31
18	32
19	33
20	36
21	37
22	39
23	40
24	41
25	42
26	43
27	44
28	45
29	46
30	47
31	48
32	51
33	54
34	57
35	58
36	59
37	60
38	63
39	64
40	66
41	69
42	72
43	75
44	78
45	81
46	84
47	87
48	90
49	93
50	94
51	95
52	96
53	97
54	98
55	99
56	100
57	101
58	102
59	105
60	108
61	111
62	112
63	113
64	114
65	117
66	118
67	120

n	a(n)
1	1
2	3
3	4
4	6
5	9
6	10
7	12
8	13
9	14
10	15
11	18
12	19
13	21
14	24
15	27
16	30
17	31
18	32
19	33
20	36
21	37
22	39
23	40
24	41
25	42
26	43
27	44
28	45
29	46
30	47
31	48
32	51
33	54
34	57
35	58
36	59
37	60
38	63
39	64
40	66
41	69
42	72
43	75
44	78
45	81
46	84
47	87
48	90
49	93
50	94
51	95
52	96
53	97
54	98
55	99
56	100
57	101
58	102
59	105
60	108
61	111
62	112
63	113
64	114
65	117
66	118
67	120