n | a(n) |
---|---|
0 | 1 |
1 | 9 |
2 | 42 |
3 | 140 |
4 | 378 |
5 | 882 |
6 | 1848 |
7 | 3564 |
8 | 6435 |
9 | 11011 |
10 | 18018 |
11 | 28392 |
12 | 43316 |
13 | 64260 |
14 | 93024 |
15 | 131784 |
16 | 183141 |
17 | 250173 |
18 | 336490 |
19 | 446292 |
20 | 584430 |
21 | 756470 |
22 | 968760 |
23 | 1228500 |
24 | 1543815 |
25 | 1923831 |
26 | 2378754 |
27 | 2919952 |
28 | 3560040 |
29 | 4312968 |
30 | 5194112 |
31 | 6220368 |
32 | 7410249 |
33 | 8783985 |
34 | 10363626 |
[1,9,42,140,378,882,1848,3564,6435,11011,18018, 28392,43316,64260,93024,131784,183141,250173, 336490,446292,584430,756470,968760,1228500, 1543815,1923831,2378754,2919952,3560040,4312968, 5194112,6220368,7410249,8783985,10363626] |