A022856 - cp's OEIS frontend

A022856 a(n) = n-2 + Sum_{i = 1..n-2} (a(i+1) mod a(i)) for n >= 3 with a(1) = a(2) = 1.

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	5
7	8
8	12
9	17
10	23
11	30
12	38
13	47
14	57
15	68
16	80
17	93
18	107
19	122
20	138
21	155
22	173
23	192
24	212
25	233
26	255
27	278
28	302
29	327
30	353
31	380
32	408
33	437
34	467
35	498
36	530
37	563
38	597
39	632
40	668
41	705
42	743
43	782
44	822
45	863
46	905
47	948
48	992
49	1037
50	1083
51	1130
52	1178
53	1227

[1, 1, 1, 2, 3, 5, 8, 12, 17, 23, 30, 38, 47, 57, 68, 80, 93, 107, 122, 138, 155, 173, 192, 212, 233, 255, 278, 302, 327, 353, 380, 408, 437, 467, 498, 530, 563, 597, 632, 668, 705, 743, 782, 822, 863, 905, 948, 992, 1037, 1083, 1130, 1178, 1227]

cp's OEIS Frontend

A022856 a(n) = n-2 + Sum_{i = 1..n-2} (a(i+1) mod a(i)) for n >= 3 with a(1) = a(2) = 1.

Table of values

List of values