n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 19 |
4 | 65 |
5 | 233 |
6 | 865 |
7 | 3301 |
8 | 12875 |
9 | 51117 |
10 | 205976 |
11 | 840429 |
12 | 3466108 |
13 | 14428533 |
14 | 60553582 |
15 | 255966778 |
16 | 1088958246 |
17 | 4659451357 |
18 | 20040555293 |
19 | 86601741731 |
20 | 375841271002 |
21 | 1637517304050 |
22 | 7160331688467 |
23 | 31414117679299 |
24 | 138246342300698 |
25 | 610132138587868 |
26 | 2699915527292424 |
27 | 11977212862937455 |
[1,2,6,19,65,233,865,3301,12875,51117,205976, 840429,3466108,14428533,60553582,255966778, 1088958246,4659451357,20040555293,86601741731, 375841271002,1637517304050,7160331688467, 31414117679299,138246342300698,610132138587868, 2699915527292424,11977212862937455] |