n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 10 |
4 | 30 |
5 | 96 |
6 | 324 |
7 | 1138 |
8 | 4134 |
9 | 15464 |
10 | 59198 |
11 | 230678 |
12 | 913916 |
13 | 3672582 |
14 | 14940794 |
15 | 61426632 |
16 | 254982076 |
17 | 1067415522 |
18 | 4502824810 |
19 | 19124778850 |
20 | 81738521776 |
21 | 351324672662 |
22 | 1517933308038 |
23 | 6589522925548 |
24 | 28732010239624 |
25 | 125785366412276 |
26 | 552750320877912 |
27 | 2437456478786392 |
28 | 10783477702624244 |
[1,2,4,10,30,96,324,1138,4134,15464,59198,230678, 913916,3672582,14940794,61426632,254982076, 1067415522,4502824810,19124778850,81738521776, 351324672662,1517933308038,6589522925548, 28732010239624,125785366412276,552750320877912, 2437456478786392,10783477702624244] |