A260708 - OEIS

A260708 as a simple table

n	a(n)
0	0
1	1
2	3
3	6
4	10
5	16
6	21
7	29
8	36
9	46
10	55
11	68
12	78
13	93
14	105
15	122
16	136
17	156
18	171
19	193
20	210
21	234
22	253
23	280
24	300
25	329
26	351
27	382
28	406
29	440
30	465
31	501
32	528
33	566
34	595
35	636
36	666
37	709
38	741
39	786
40	820
41	868
42	903
43	953
44	990
45	1042
46	1081
47	1136
48	1176
49	1233
50	1275
51	1334
52	1378

[0,1,3,6,10,16,21,29,36,46,55,68,78,93,105,122, 136,156,171,193,210,234,253,280,300,329,351,382, 406,440,465,501,528,566,595,636,666,709,741,786, 820,868,903,953,990,1042,1081,1136,1176,1233,1275, 1334,1378]