n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 10 |
4 | 38 |
5 | 142 |
6 | 470 |
7 | 1576 |
8 | 5940 |
9 | 22714 |
10 | 83456 |
11 | 305088 |
12 | 1158606 |
13 | 4456076 |
14 | 16946498 |
15 | 64189932 |
16 | 246350606 |
17 | 952607962 |
18 | 3675557676 |
19 | 14158562010 |
20 | 54805236890 |
21 | 213011072542 |
22 | 828185178452 |
23 | 3219077811678 |
24 | 12537974366478 |
[1,2,4,10,38,142,470,1576,5940,22714,83456,305088, 1158606,4456076,16946498,64189932,246350606, 952607962,3675557676,14158562010,54805236890, 213011072542,828185178452,3219077811678, 12537974366478] |