A049790 - cp's OEIS frontend

A049790 Triangular array T read by rows: T(n,k) = Sum_{j=1..k} floor(n/floor(k/j)).

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	7
7	4
8	6
9	9
10	11
11	5
12	7
13	11
14	13
15	18
16	6
17	9
18	14
19	16
20	22
21	24
22	7
23	10
24	16
25	18
26	25
27	27
28	34
29	8
30	12
31	18
32	22
33	29
34	31
35	39
36	43
37	9
38	13
39	21
40	24
41	32
42	35
43	44
44	47
45	55
46	10
47	15
48	23
49	27
50	37
51	39
52	49
53	53
54	61
55	66
56	11
57	16
58	25
59	29
60	40
61	42
62	53
63	57
64	66
65	71
66	82
67	12
68	18
69	28
70	33
71	44
72	48
73	59
74	64
75	74
76	79
77	91
78	94

[1, 2, 3, 3, 4, 7, 4, 6, 9, 11, 5, 7, 11, 13, 18, 6, 9, 14, 16, 22, 24, 7, 10, 16, 18, 25, 27, 34, 8, 12, 18, 22, 29, 31, 39, 43, 9, 13, 21, 24, 32, 35, 44, 47, 55, 10, 15, 23, 27, 37, 39, 49, 53, 61, 66, 11, 16, 25, 29, 40, 42, 53, 57, 66, 71, 82, 12, 18, 28, 33, 44, 48, 59, 64, 74, 79, 91, 94]

cp's OEIS Frontend

A049790 Triangular array T read by rows: T(n,k) = Sum_{j=1..k} floor(n/floor(k/j)).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	7
7	4
8	6
9	9
10	11
11	5
12	7
13	11
14	13
15	18
16	6
17	9
18	14
19	16
20	22
21	24
22	7
23	10
24	16
25	18
26	25
27	27
28	34
29	8
30	12
31	18
32	22
33	29
34	31
35	39
36	43
37	9
38	13
39	21
40	24
41	32
42	35
43	44
44	47
45	55
46	10
47	15
48	23
49	27
50	37
51	39
52	49
53	53
54	61
55	66
56	11
57	16
58	25
59	29
60	40
61	42
62	53
63	57
64	66
65	71
66	82
67	12
68	18
69	28
70	33
71	44
72	48
73	59
74	64
75	74
76	79
77	91
78	94

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	7
7	4
8	6
9	9
10	11
11	5
12	7
13	11
14	13
15	18
16	6
17	9
18	14
19	16
20	22
21	24
22	7
23	10
24	16
25	18
26	25
27	27
28	34
29	8
30	12
31	18
32	22
33	29
34	31
35	39
36	43
37	9
38	13
39	21
40	24
41	32
42	35
43	44
44	47
45	55
46	10
47	15
48	23
49	27
50	37
51	39
52	49
53	53
54	61
55	66
56	11
57	16
58	25
59	29
60	40
61	42
62	53
63	57
64	66
65	71
66	82
67	12
68	18
69	28
70	33
71	44
72	48
73	59
74	64
75	74
76	79
77	91
78	94

n	a(n)
1	1
2	2
3	3
4	3
5	4
6	7
7	4
8	6
9	9
10	11
11	5
12	7
13	11
14	13
15	18
16	6
17	9
18	14
19	16
20	22
21	24
22	7
23	10
24	16
25	18
26	25
27	27
28	34
29	8
30	12
31	18
32	22
33	29
34	31
35	39
36	43
37	9
38	13
39	21
40	24
41	32
42	35
43	44
44	47
45	55
46	10
47	15
48	23
49	27
50	37
51	39
52	49
53	53
54	61
55	66
56	11
57	16
58	25
59	29
60	40
61	42
62	53
63	57
64	66
65	71
66	82
67	12
68	18
69	28
70	33
71	44
72	48
73	59
74	64
75	74
76	79
77	91
78	94