n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 3 |
4 | 6 |
5 | 10 |
6 | 15 |
7 | 21 |
8 | 28 |
9 | 36 |
10 | 45 |
11 | 55 |
12 | 65 |
13 | 76 |
14 | 88 |
15 | 101 |
16 | 115 |
17 | 130 |
18 | 146 |
19 | 163 |
20 | 181 |
21 | 200 |
22 | 220 |
23 | 240 |
24 | 261 |
25 | 283 |
26 | 306 |
27 | 330 |
28 | 355 |
29 | 381 |
30 | 408 |
31 | 436 |
32 | 465 |
33 | 495 |
34 | 525 |
35 | 556 |
36 | 588 |
37 | 621 |
38 | 655 |
39 | 690 |
40 | 726 |
41 | 763 |
42 | 801 |
43 | 840 |
44 | 880 |
45 | 920 |
46 | 961 |
47 | 1003 |
48 | 1046 |
49 | 1090 |
50 | 1135 |
51 | 1181 |
52 | 1228 |
53 | 1276 |
[0,0,1,3,6,10,15,21,28,36,45,55,65,76,88,101,115, 130,146,163,181,200,220,240,261,283,306,330,355, 381,408,436,465,495,525,556,588,621,655,690,726, 763,801,840,880,920,961,1003,1046,1090,1135,1181, 1228,1276] |