n | a(n) |
---|---|
1 | 2 |
2 | 9 |
3 | 30 |
4 | 87 |
5 | 234 |
6 | 597 |
7 | 1470 |
8 | 3522 |
9 | 8264 |
10 | 19067 |
11 | 43398 |
12 | 97659 |
13 | 217674 |
14 | 481221 |
15 | 1056370 |
16 | 2304676 |
17 | 5000934 |
18 | 10799564 |
19 | 23222114 |
20 | 49742577 |
21 | 106181710 |
22 | 225947089 |
23 | 479426238 |
24 | 1014615466 |
25 | 2142099088 |
26 | 4512515283 |
27 | 9486635788 |
28 | 19906068415 |
29 | 41696243298 |
30 | 87196489799 |
[2,9,30,87,234,597,1470,3522,8264,19067,43398, 97659,217674,481221,1056370,2304676,5000934, 10799564,23222114,49742577,106181710,225947089, 479426238,1014615466,2142099088,4512515283, 9486635788,19906068415,41696243298,87196489799] |