A120161 - cp's OEIS frontend

A120161 a(n) = 2 + floor((1 + Sum_{j=1..n-1} a(j))/4).

n	a(n)
1	2
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	11
10	14
11	18
12	22
13	28
14	35
15	43
16	54
17	68
18	85
19	106
20	132
21	165
22	207
23	258
24	323
25	404
26	505
27	631
28	789
29	986
30	1232
31	1540
32	1925
33	2407
34	3008
35	3760
36	4700
37	5875
38	7344
39	9180
40	11475
41	14344
42	17930
43	22412
44	28015
45	35019
46	43774
47	54717
48	68397
49	85496
50	106870

[2, 2, 3, 4, 5, 6, 7, 9, 11, 14, 18, 22, 28, 35, 43, 54, 68, 85, 106, 132, 165, 207, 258, 323, 404, 505, 631, 789, 986, 1232, 1540, 1925, 2407, 3008, 3760, 4700, 5875, 7344, 9180, 11475, 14344, 17930, 22412, 28015, 35019, 43774, 54717, 68397, 85496, 106870]

cp's OEIS Frontend

A120161 a(n) = 2 + floor((1 + Sum_{j=1..n-1} a(j))/4).

Table of values

List of values