n | a(n) |
---|---|
0 | 3 |
1 | 6 |
2 | 14 |
3 | 31 |
4 | 70 |
5 | 156 |
6 | 349 |
7 | 780 |
8 | 1745 |
9 | 3901 |
10 | 8723 |
11 | 19505 |
12 | 43615 |
13 | 97526 |
14 | 218075 |
15 | 487630 |
16 | 1090374 |
17 | 2438150 |
18 | 5451870 |
19 | 12190751 |
20 | 27259348 |
21 | 60953755 |
22 | 136296740 |
23 | 304768775 |
24 | 681483699 |
25 | 1523843876 |
26 | 3407418494 |
27 | 7619219380 |
28 | 17037092470 |
[3,6,14,31,70,156,349,780,1745,3901,8723,19505, 43615,97526,218075,487630,1090374,2438150,5451870, 12190751,27259348,60953755,136296740,304768775, 681483699,1523843876,3407418494,7619219380, 17037092470] |