A120169 - cp's OEIS frontend

A120169 a(n) = 12 + floor((1 + Sum_{j=1..n-1} a(j))/4).

n	a(n)
1	12
2	15
3	19
4	23
5	29
6	36
7	45
8	57
9	71
10	89
11	111
12	139
13	173
14	217
15	271
16	339
17	423
18	529
19	661
20	827
21	1033
22	1292
23	1615
24	2018
25	2523
26	3154
27	3942
28	4928
29	6160
30	7700
31	9625
32	12031
33	15039
34	18798
35	23498
36	29372
37	36715
38	45894
39	57368
40	71710

[12, 15, 19, 23, 29, 36, 45, 57, 71, 89, 111, 139, 173, 217, 271, 339, 423, 529, 661, 827, 1033, 1292, 1615, 2018, 2523, 3154, 3942, 4928, 6160, 7700, 9625, 12031, 15039, 18798, 23498, 29372, 36715, 45894, 57368, 71710]

cp's OEIS Frontend

A120169 a(n) = 12 + floor((1 + Sum_{j=1..n-1} a(j))/4).

Table of values

List of values