n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 16 |
4 | 67 |
5 | 276 |
6 | 1200 |
7 | 5293 |
8 | 23427 |
9 | 104425 |
10 | 468428 |
11 | 2110725 |
12 | 9546256 |
13 | 43315546 |
14 | 197088195 |
15 | 898910916 |
16 | 4108495491 |
17 | 18812770011 |
18 | 86285313327 |
19 | 396332663094 |
20 | 1822878714492 |
21 | 8394131895424 |
22 | 38696042930251 |
23 | 178561943852670 |
24 | 824720550229584 |
25 | 3812313399877776 |
[1,1,3,16,67,276,1200,5293,23427,104425,468428, 2110725,9546256,43315546,197088195,898910916, 4108495491,18812770011,86285313327,396332663094, 1822878714492,8394131895424,38696042930251, 178561943852670,824720550229584,3812313399877776] |