n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 18 |
5 | 59 |
6 | 199 |
7 | 693 |
8 | 2465 |
9 | 8937 |
10 | 32880 |
11 | 122513 |
12 | 461331 |
13 | 1753037 |
14 | 6713758 |
15 | 25888515 |
16 | 100427611 |
17 | 391657635 |
18 | 1534674930 |
19 | 6039078032 |
20 | 23855475724 |
21 | 94561195899 |
22 | 376019415794 |
23 | 1499554893338 |
24 | 5996061250461 |
25 | 24034238674758 |
26 | 96554979145357 |
27 | 388711331661818 |
28 | 1567919554600690 |
[1,1,2,6,18,59,199,693,2465,8937,32880,122513, 461331,1753037,6713758,25888515,100427611, 391657635,1534674930,6039078032,23855475724, 94561195899,376019415794,1499554893338, 5996061250461,24034238674758,96554979145357, 388711331661818,1567919554600690] |