n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 9 |
4 | 18 |
5 | 36 |
6 | 78 |
7 | 169 |
8 | 364 |
9 | 784 |
10 | 1680 |
11 | 3600 |
12 | 7740 |
13 | 16641 |
14 | 35733 |
15 | 76729 |
16 | 164815 |
17 | 354025 |
18 | 760410 |
19 | 1633284 |
20 | 3508110 |
21 | 7535025 |
22 | 16184520 |
23 | 34762816 |
24 | 74666944 |
25 | 160376896 |
26 | 344473464 |
27 | 739894401 |
28 | 1589218425 |
29 | 3413480625 |
30 | 7331811675 |
[1,3,9,18,36,78,169,364,784,1680,3600,7740,16641, 35733,76729,164815,354025,760410,1633284,3508110, 7535025,16184520,34762816,74666944,160376896, 344473464,739894401,1589218425,3413480625, 7331811675] |