n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 13 |
5 | 36 |
6 | 157 |
7 | 554 |
8 | 2800 |
9 | 12530 |
10 | 70772 |
11 | 362188 |
12 | 2370564 |
13 | 13658713 |
14 | 95366064 |
15 | 642861687 |
16 | 4774830263 |
17 | 34769374156 |
18 | 288999332899 |
19 | 2255537559077 |
20 | 19693313843687 |
21 | 172690825379198 |
22 | 1572921138465599 |
23 | 14538979953843188 |
24 | 145980379536597239 |
[1,1,2,4,13,36,157,554,2800,12530,70772,362188, 2370564,13658713,95366064,642861687,4774830263, 34769374156,288999332899,2255537559077, 19693313843687,172690825379198,1572921138465599, 14538979953843188,145980379536597239] |