A051336 - cp's OEIS frontend

A051336 Number of increasing arithmetic progressions in {1,2,3,...,n}, including trivial arithmetic progressions of lengths 1 and 2.

n	a(n)
1	1
2	3
3	7
4	13
5	22
6	33
7	48
8	65
9	86
10	110
11	138
12	168
13	204
14	242
15	284
16	330
17	381
18	434
19	493
20	554
21	621
22	692
23	767
24	844
25	929
26	1017
27	1109
28	1205
29	1307
30	1411
31	1523
32	1637
33	1757
34	1881
35	2009
36	2141
37	2282
38	2425
39	2572
40	2723
41	2882
42	3043
43	3212
44	3383
45	3560
46	3743
47	3930
48	4119

[1, 3, 7, 13, 22, 33, 48, 65, 86, 110, 138, 168, 204, 242, 284, 330, 381, 434, 493, 554, 621, 692, 767, 844, 929, 1017, 1109, 1205, 1307, 1411, 1523, 1637, 1757, 1881, 2009, 2141, 2282, 2425, 2572, 2723, 2882, 3043, 3212, 3383, 3560, 3743, 3930, 4119]

cp's OEIS Frontend

A051336 Number of increasing arithmetic progressions in {1,2,3,...,n}, including trivial arithmetic progressions of lengths 1 and 2.

Table of values

List of values