A081331 - cp's OEIS frontend

A081331 Number of numbers <= n that can be written as sum of two 3-smooth numbers.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	13
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	21
24	22
25	23
26	24
27	25
28	26
29	27
30	28
31	29
32	30
33	31
34	32
35	33
36	34
37	35
38	36
39	37
40	38
41	39
42	40
43	41
44	42
45	43
46	43
47	43
48	44
49	45
50	46
51	47
52	48
53	48
54	49
55	50
56	51
57	52
58	53
59	54
60	55
61	55
62	56
63	57
64	58
65	59
66	60
67	61
68	62
69	62
70	63
71	63
72	64
73	65

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 43, 43, 44, 45, 46, 47, 48, 48, 49, 50, 51, 52, 53, 54, 55, 55, 56, 57, 58, 59, 60, 61, 62, 62, 63, 63, 64, 65]

cp's OEIS Frontend

A081331 Number of numbers <= n that can be written as sum of two 3-smooth numbers.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	13
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	21
24	22
25	23
26	24
27	25
28	26
29	27
30	28
31	29
32	30
33	31
34	32
35	33
36	34
37	35
38	36
39	37
40	38
41	39
42	40
43	41
44	42
45	43
46	43
47	43
48	44
49	45
50	46
51	47
52	48
53	48
54	49
55	50
56	51
57	52
58	53
59	54
60	55
61	55
62	56
63	57
64	58
65	59
66	60
67	61
68	62
69	62
70	63
71	63
72	64
73	65

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	13
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	21
24	22
25	23
26	24
27	25
28	26
29	27
30	28
31	29
32	30
33	31
34	32
35	33
36	34
37	35
38	36
39	37
40	38
41	39
42	40
43	41
44	42
45	43
46	43
47	43
48	44
49	45
50	46
51	47
52	48
53	48
54	49
55	50
56	51
57	52
58	53
59	54
60	55
61	55
62	56
63	57
64	58
65	59
66	60
67	61
68	62
69	62
70	63
71	63
72	64
73	65

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	13
15	14
16	15
17	16
18	17
19	18
20	19
21	20
22	21
23	21
24	22
25	23
26	24
27	25
28	26
29	27
30	28
31	29
32	30
33	31
34	32
35	33
36	34
37	35
38	36
39	37
40	38
41	39
42	40
43	41
44	42
45	43
46	43
47	43
48	44
49	45
50	46
51	47
52	48
53	48
54	49
55	50
56	51
57	52
58	53
59	54
60	55
61	55
62	56
63	57
64	58
65	59
66	60
67	61
68	62
69	62
70	63
71	63
72	64
73	65