A120170 - cp's OEIS frontend

A120170 a(n) = ceiling( Sum_{i=1..n-1} a(i)/5 ), a(1)=1.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	2
8	2
9	2
10	3
11	3
12	4
13	5
14	6
15	7
16	8
17	10
18	12
19	14
20	17
21	21
22	25
23	30
24	36
25	43
26	52
27	62
28	74
29	89
30	107
31	128
32	154
33	185
34	222
35	266
36	319
37	383
38	460
39	552
40	662
41	795
42	954
43	1144
44	1373
45	1648
46	1977
47	2373
48	2847
49	3417
50	4100
51	4920
52	5904
53	7085
54	8502
55	10202
56	12243
57	14691
58	17630

[1, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, 4, 5, 6, 7, 8, 10, 12, 14, 17, 21, 25, 30, 36, 43, 52, 62, 74, 89, 107, 128, 154, 185, 222, 266, 319, 383, 460, 552, 662, 795, 954, 1144, 1373, 1648, 1977, 2373, 2847, 3417, 4100, 4920, 5904, 7085, 8502, 10202, 12243, 14691, 17630]

cp's OEIS Frontend

A120170 a(n) = ceiling( Sum_{i=1..n-1} a(i)/5 ), a(1)=1.

Table of values

List of values