A376000 - OEIS

A376000 as a simple table

n	a(n)
1	1
2	6
3	10
4	15
5	21
6	28
7	36
8	45
9	50
10	55
11	66
12	78
13	91
14	105
15	120
16	136
17	153
18	171
19	190
20	196
21	210
22	231
23	253
24	276
25	300
26	325
27	336
28	351
29	378
30	406
31	435
32	465
33	490
34	496
35	528
36	540
37	561
38	595
39	630
40	666
41	703
42	741
43	780
44	820
45	825
46	861
47	903
48	946
49	990
50	1035
51	1081
52	1128
53	1176
54	1210

[1,6,10,15,21,28,36,45,50,55,66,78,91,105,120,136, 153,171,190,196,210,231,253,276,300,325,336,351, 378,406,435,465,490,496,528,540,561,595,630,666, 703,741,780,820,825,861,903,946,990,1035,1081, 1128,1176,1210]