A111582 - OEIS

A111582 as a simple table

n	a(n)
0	1
1	3
2	6
3	11
4	16
5	22
6	28
7	33
8	41
9	51
10	61
11	76
12	93
13	107
14	125
15	144
16	159
17	178
18	200
19	215
20	233
21	256
22	271
23	288
24	314
25	332
26	349
27	377
28	391
29	407
30	435
31	450
32	466
33	497
34	517
35	538
36	574
37	595
38	619
39	653
40	679
41	705
42	750
43	784
44	816
45	859
46	888
47	919
48	961
49	1002
50	1039
51	1102
52	1145
53	1186

[1,3,6,11,16,22,28,33,41,51,61,76,93,107,125,144, 159,178,200,215,233,256,271,288,314,332,349,377, 391,407,435,450,466,497,517,538,574,595,619,653, 679,705,750,784,816,859,888,919,961,1002,1039, 1102,1145,1186]