A008772 - OEIS

A008772 as a simple table

n	a(n)
0	1
1	1
2	2
3	3
4	5
5	6
6	9
7	11
8	15
9	18
10	23
11	28
12	35
13	41
14	50
15	59
16	70
17	81
18	95
19	109
20	126
21	143
22	163
23	184
24	208
25	232
26	260
27	289
28	321
29	354
30	391
31	429
32	471
33	514
34	561
35	610
36	663
37	717
38	776
39	837
40	902
41	969
42	1041
43	1115
44	1194
45	1275
46	1361
47	1450
48	1544
49	1640
50	1742
51	1847
52	1957
53	2070
54	2189
55	2311
56	2439
57	2570
58	2707

[1,1,2,3,5,6,9,11,15,18,23,28,35,41,50,59,70,81, 95,109,126,143,163,184,208,232,260,289,321,354, 391,429,471,514,561,610,663,717,776,837,902,969, 1041,1115,1194,1275,1361,1450,1544,1640,1742,1847, 1957,2070,2189,2311,2439,2570,2707]