n | a(n) |
---|---|
1 | 3 |
2 | 30 |
3 | 181 |
4 | 874 |
5 | 3711 |
6 | 14524 |
7 | 53736 |
8 | 190782 |
9 | 656350 |
10 | 2202647 |
11 | 7244772 |
12 | 23436690 |
13 | 74767864 |
14 | 235710440 |
15 | 735528909 |
16 | 2274844294 |
17 | 6980781346 |
18 | 21273830001 |
19 | 64432110648 |
20 | 194066078164 |
21 | 581597738908 |
22 | 1735097817528 |
23 | 5155001023066 |
[3,30,181,874,3711,14524,53736,190782,656350, 2202647,7244772,23436690,74767864,235710440, 735528909,2274844294,6980781346,21273830001, 64432110648,194066078164,581597738908, 1735097817528,5155001023066] |