A002579 - OEIS

A002579 as a simple table

n	a(n)
1	3
2	5
3	8
4	12
5	17
6	23
7	30
8	37
9	45
10	54
11	64
12	75
13	87
14	99
15	112
16	126
17	141
18	157
19	174
20	191
21	209
22	228
23	248
24	269
25	291
26	313
27	336
28	360
29	385
30	411
31	438
32	465
33	493
34	522
35	552
36	583
37	615
38	647
39	680
40	714
41	749
42	785
43	822
44	859
45	897
46	936
47	976
48	1017
49	1059
50	1101
51	1144

[3,5,8,12,17,23,30,37,45,54,64,75,87,99,112,126, 141,157,174,191,209,228,248,269,291,313,336,360, 385,411,438,465,493,522,552,583,615,647,680,714, 749,785,822,859,897,936,976,1017,1059,1101,1144]