n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 11 |
4 | 44 |
5 | 185 |
6 | 804 |
7 | 3579 |
8 | 16229 |
9 | 74690 |
10 | 347984 |
11 | 1638169 |
12 | 7780876 |
13 | 37245028 |
14 | 179503340 |
15 | 870374211 |
16 | 4243141332 |
17 | 20786340271 |
18 | 102275718924 |
19 | 505235129250 |
20 | 2504876652190 |
21 | 12459922302900 |
22 | 62167152967680 |
23 | 311040862133625 |
[1,1,3,11,44,185,804,3579,16229,74690,347984, 1638169,7780876,37245028,179503340,870374211, 4243141332,20786340271,102275718924,505235129250, 2504876652190,12459922302900,62167152967680, 311040862133625] |