n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 46 |
6 | 166 |
7 | 652 |
8 | 2780 |
9 | 12644 |
10 | 61136 |
11 | 312676 |
12 | 1680592 |
13 | 9467680 |
14 | 55704104 |
15 | 341185496 |
16 | 2170853456 |
17 | 14314313872 |
18 | 97620050080 |
19 | 687418278544 |
20 | 4989946902176 |
21 | 37286121988256 |
22 | 286432845428192 |
23 | 2259405263572480 |
24 | 18280749571449664 |
25 | 151561941235370176 |
[1,1,2,5,14,46,166,652,2780,12644,61136,312676, 1680592,9467680,55704104,341185496,2170853456, 14314313872,97620050080,687418278544, 4989946902176,37286121988256,286432845428192, 2259405263572480,18280749571449664, 151561941235370176] |