n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 3 |
4 | 6 |
5 | 10 |
6 | 15 |
7 | 21 |
8 | 28 |
9 | 36 |
10 | 45 |
11 | 55 |
12 | 66 |
13 | 78 |
14 | 91 |
15 | 105 |
16 | 120 |
17 | 136 |
18 | 153 |
19 | 171 |
20 | 190 |
21 | 210 |
22 | 231 |
23 | 253 |
24 | 300 |
25 | 378 |
26 | 406 |
27 | 435 |
28 | 465 |
29 | 496 |
30 | 528 |
31 | 561 |
32 | 595 |
33 | 666 |
34 | 703 |
35 | 741 |
36 | 780 |
37 | 820 |
38 | 861 |
39 | 903 |
40 | 990 |
41 | 1035 |
42 | 1081 |
43 | 1128 |
44 | 1176 |
45 | 1225 |
46 | 1275 |
47 | 1326 |
48 | 1378 |
49 | 1485 |
50 | 1540 |
51 | 1653 |
52 | 1711 |
53 | 1891 |
[0,1,3,6,10,15,21,28,36,45,55,66,78,91,105,120, 136,153,171,190,210,231,253,300,378,406,435,465, 496,528,561,595,666,703,741,780,820,861,903,990, 1035,1081,1128,1176,1225,1275,1326,1378,1485,1540, 1653,1711,1891] |