A111201 - OEIS

A111201 as a simple table

n	a(n)
1	1
2	4
3	8
4	12
5	18
6	25
7	33
8	41
9	51
10	62
11	74
12	86
13	100
14	115
15	131
16	148
17	166
18	184
19	204
20	225
21	247
22	270
23	294
24	319
25	344
26	371
27	399
28	428
29	458
30	489
31	521
32	554
33	587
34	622
35	658
36	695
37	733
38	772
39	812
40	853
41	894
42	937
43	981
44	1026
45	1072
46	1119
47	1167
48	1216
49	1266
50	1317
51	1368
52	1421
53	1475

[1,4,8,12,18,25,33,41,51,62,74,86,100,115,131,148, 166,184,204,225,247,270,294,319,344,371,399,428, 458,489,521,554,587,622,658,695,733,772,812,853, 894,937,981,1026,1072,1119,1167,1216,1266,1317, 1368,1421,1475]