A078567 - cp's OEIS frontend

A078567 Number of arithmetic subsequences of [1..n] with length > 1.

n	a(n)
1	0
2	1
3	4
4	9
5	17
6	27
7	41
8	57
9	77
10	100
11	127
12	156
13	191
14	228
15	269
16	314
17	364
18	416
19	474
20	534
21	600
22	670
23	744
24	820
25	904
26	991
27	1082
28	1177
29	1278
30	1381
31	1492
32	1605
33	1724
34	1847
35	1974
36	2105
37	2245
38	2387
39	2533
40	2683
41	2841
42	3001
43	3169
44	3339
45	3515
46	3697
47	3883
48	4071
49	4269
50	4470

[0, 1, 4, 9, 17, 27, 41, 57, 77, 100, 127, 156, 191, 228, 269, 314, 364, 416, 474, 534, 600, 670, 744, 820, 904, 991, 1082, 1177, 1278, 1381, 1492, 1605, 1724, 1847, 1974, 2105, 2245, 2387, 2533, 2683, 2841, 3001, 3169, 3339, 3515, 3697, 3883, 4071, 4269, 4470]

cp's OEIS Frontend

A078567 Number of arithmetic subsequences of [1..n] with length > 1.

Table of values

List of values