n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 18 |
5 | 57 |
6 | 187 |
7 | 629 |
8 | 2156 |
9 | 7502 |
10 | 26427 |
11 | 94053 |
12 | 337653 |
13 | 1221260 |
14 | 4445892 |
15 | 16277089 |
16 | 59893052 |
17 | 221370725 |
18 | 821499759 |
19 | 3059620076 |
20 | 11432831745 |
21 | 42848889316 |
22 | 161032785057 |
23 | 606710026659 |
24 | 2291156662259 |
25 | 8670805904186 |
26 | 32879697168622 |
27 | 124910667052026 |
28 | 475357627716839 |
29 | 1811931609379926 |
[1,1,2,6,18,57,187,629,2156,7502,26427,94053, 337653,1221260,4445892,16277089,59893052, 221370725,821499759,3059620076,11432831745, 42848889316,161032785057,606710026659, 2291156662259,8670805904186,32879697168622, 124910667052026,475357627716839,1811931609379926] |