n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 16 |
4 | 57 |
5 | 219 |
6 | 883 |
7 | 3687 |
8 | 15803 |
9 | 69128 |
10 | 307363 |
11 | 1385003 |
12 | 6310869 |
13 | 29028616 |
14 | 134610771 |
15 | 628612921 |
16 | 2953640371 |
17 | 13953726888 |
18 | 66240021987 |
19 | 315812059436 |
20 | 1511569447859 |
21 | 7260364084997 |
22 | 34984937594741 |
23 | 169073568381936 |
24 | 819288294835939 |
25 | 3979892232651125 |
26 | 19377475499900015 |
[1,2,5,16,57,219,883,3687,15803,69128,307363, 1385003,6310869,29028616,134610771,628612921, 2953640371,13953726888,66240021987,315812059436, 1511569447859,7260364084997,34984937594741, 169073568381936,819288294835939,3979892232651125, 19377475499900015] |