n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 21 |
5 | 78 |
6 | 305 |
7 | 1304 |
8 | 6007 |
9 | 29854 |
10 | 159012 |
11 | 904986 |
12 | 5479078 |
13 | 35150263 |
14 | 238033523 |
15 | 1695554145 |
16 | 12663533586 |
17 | 98881246850 |
18 | 805128085616 |
19 | 6820302066048 |
20 | 59983405937707 |
21 | 546690232627480 |
22 | 5154757226832625 |
23 | 50208266917662433 |
24 | 504482106565647708 |
[1,1,2,7,21,78,305,1304,6007,29854,159012,904986, 5479078,35150263,238033523,1695554145,12663533586, 98881246850,805128085616,6820302066048, 59983405937707,546690232627480,5154757226832625, 50208266917662433,504482106565647708] |