n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 6 |
6 | 15 |
7 | 35 |
8 | 89 |
9 | 218 |
10 | 571 |
11 | 1446 |
12 | 3834 |
13 | 10003 |
14 | 26864 |
15 | 71120 |
16 | 193602 |
17 | 519409 |
18 | 1423539 |
19 | 3865590 |
20 | 10666555 |
21 | 29185905 |
22 | 81078369 |
23 | 223367624 |
24 | 623192655 |
25 | 1727907182 |
26 | 4840616872 |
27 | 13482957335 |
28 | 37923616139 |
29 | 106070402639 |
30 | 299214369115 |
31 | 840217034149 |
[1,1,1,3,6,15,35,89,218,571,1446,3834,10003,26864, 71120,193602,519409,1423539,3865590,10666555, 29185905,81078369,223367624,623192655,1727907182, 4840616872,13482957335,37923616139,106070402639, 299214369115,840217034149] |