A075535 - cp's OEIS frontend

A075535 a(1)=1, a(n) = Sum_{k=1..n-1} min(a(k), a(n-k)).

n	a(n)
1	1
2	1
3	2
4	3
5	4
6	6
7	8
8	11
9	14
10	18
11	22
12	28
13	34
14	42
15	50
16	61
17	72
18	86
19	100
20	118
21	136
22	158
23	180
24	208
25	236
26	270
27	304
28	346
29	388
30	438
31	488
32	549
33	610
34	682
35	754
36	840
37	926
38	1026
39	1126
40	1244
41	1362
42	1498
43	1634
44	1792
45	1950
46	2130
47	2310
48	2518
49	2726
50	2962
51	3198
52	3468
53	3738
54	4042

[1, 1, 2, 3, 4, 6, 8, 11, 14, 18, 22, 28, 34, 42, 50, 61, 72, 86, 100, 118, 136, 158, 180, 208, 236, 270, 304, 346, 388, 438, 488, 549, 610, 682, 754, 840, 926, 1026, 1126, 1244, 1362, 1498, 1634, 1792, 1950, 2130, 2310, 2518, 2726, 2962, 3198, 3468, 3738, 4042]

cp's OEIS Frontend

A075535 a(1)=1, a(n) = Sum_{k=1..n-1} min(a(k), a(n-k)).

Table of values

List of values