n | a(n) |
---|---|
1 | 2 |
2 | 9 |
3 | 30 |
4 | 70 |
5 | 165 |
6 | 273 |
7 | 476 |
8 | 684 |
9 | 1035 |
10 | 1595 |
11 | 2046 |
12 | 2886 |
13 | 3731 |
14 | 4515 |
15 | 5640 |
16 | 7208 |
17 | 9027 |
18 | 10431 |
19 | 12730 |
20 | 14910 |
21 | 16863 |
22 | 19987 |
23 | 22908 |
24 | 26700 |
25 | 31525 |
26 | 35451 |
27 | 38934 |
28 | 43442 |
29 | 47415 |
30 | 52545 |
31 | 62992 |
32 | 69168 |
33 | 76857 |
34 | 82705 |
35 | 93870 |
36 | 100566 |
37 | 110371 |
38 | 120783 |
39 | 130260 |
40 | 141860 |
[2,9,30,70,165,273,476,684,1035,1595,2046,2886, 3731,4515,5640,7208,9027,10431,12730,14910,16863, 19987,22908,26700,31525,35451,38934,43442,47415, 52545,62992,69168,76857,82705,93870,100566,110371, 120783,130260,141860] |