A049981 - cp's OEIS frontend

A049981 a(n) is the number of arithmetic progressions of positive integers, strictly increasing with sum <= n.

n	a(n)
1	1
2	2
3	4
4	6
5	9
6	13
7	17
8	21
9	28
10	34
11	40
12	49
13	56
14	64
15	77
16	86
17	95
18	110
19	120
20	132
21	150
22	163
23	175
24	195
25	210
26	225
27	248
28	265
29	280
30	308
31	324
32	342
33	370
34	390
35	412
36	445
37	464
38	486
39	519
40	545
41	566
42	605
43	627
44	653
45	696
46	723
47	747
48	790
49	817
50	850
51	894
52	925
53	952
54	1002
55	1036
56	1070
57	1119
58	1153
59	1183
60	1243
61	1274
62	1310

[1, 2, 4, 6, 9, 13, 17, 21, 28, 34, 40, 49, 56, 64, 77, 86, 95, 110, 120, 132, 150, 163, 175, 195, 210, 225, 248, 265, 280, 308, 324, 342, 370, 390, 412, 445, 464, 486, 519, 545, 566, 605, 627, 653, 696, 723, 747, 790, 817, 850, 894, 925, 952, 1002, 1036, 1070, 1119, 1153, 1183, 1243, 1274, 1310]

cp's OEIS Frontend

A049981 a(n) is the number of arithmetic progressions of positive integers, strictly increasing with sum <= n.

Table of values

List of values