A025708 - OEIS

A025708 as a simple table

n	a(n)
0	1
1	2
2	4
3	7
4	11
5	16
6	21
7	27
8	34
9	42
10	51
11	61
12	71
13	82
14	94
15	107
16	121
17	136
18	151
19	167
20	184
21	202
22	221
23	241
24	261
25	282
26	304
27	327
28	351
29	375
30	400
31	426
32	453
33	481
34	510
35	539
36	569
37	600
38	632
39	665
40	699
41	733
42	768
43	804
44	841
45	879
46	918
47	957
48	997
49	1038
50	1080
51	1123
52	1167
53	1211
54	1256
55	1302

[1,2,4,7,11,16,21,27,34,42,51,61,71,82,94,107,121, 136,151,167,184,202,221,241,261,282,304,327,351, 375,400,426,453,481,510,539,569,600,632,665,699, 733,768,804,841,879,918,957,997,1038,1080,1123, 1167,1211,1256,1302]