n | a(n) |
---|---|
8 | 1 |
9 | 9 |
10 | 45 |
11 | 165 |
12 | 495 |
13 | 1287 |
14 | 3003 |
15 | 6435 |
16 | 12870 |
17 | 24310 |
18 | 43758 |
19 | 75582 |
20 | 125970 |
21 | 203490 |
22 | 319770 |
23 | 490314 |
24 | 735471 |
25 | 1081575 |
26 | 1562275 |
27 | 2220075 |
28 | 3108105 |
29 | 4292145 |
30 | 5852925 |
31 | 7888725 |
32 | 10518300 |
33 | 13884156 |
34 | 18156204 |
35 | 23535820 |
36 | 30260340 |
37 | 38608020 |
38 | 48903492 |
39 | 61523748 |
40 | 76904685 |
[1,9,45,165,495,1287,3003,6435,12870,24310,43758, 75582,125970,203490,319770,490314,735471,1081575, 1562275,2220075,3108105,4292145,5852925,7888725, 10518300,13884156,18156204,23535820,30260340, 38608020,48903492,61523748,76904685] |