n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 9 |
5 | 14 |
6 | 44 |
7 | 70 |
8 | 230 |
9 | 369 |
10 | 1242 |
11 | 2002 |
12 | 6853 |
13 | 11076 |
14 | 38376 |
15 | 62127 |
16 | 217242 |
17 | 352070 |
18 | 1239980 |
19 | 2010998 |
20 | 7123765 |
21 | 11559030 |
22 | 41141916 |
23 | 66780155 |
24 | 238637282 |
25 | 387444085 |
26 | 1389206210 |
27 | 2255875650 |
28 | 8112107475 |
29 | 13174629240 |
30 | 47495492400 |
[1,1,2,3,9,14,44,70,230,369,1242,2002,6853,11076, 38376,62127,217242,352070,1239980,2010998,7123765, 11559030,41141916,66780155,238637282,387444085, 1389206210,2255875650,8112107475,13174629240, 47495492400] |