n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 23 |
4 | 84 |
5 | 320 |
6 | 1246 |
7 | 5066 |
8 | 20658 |
9 | 86447 |
10 | 363905 |
11 | 1551717 |
12 | 6680516 |
13 | 28928013 |
14 | 126428930 |
15 | 554487973 |
16 | 2448780826 |
17 | 10853451220 |
18 | 48323714099 |
19 | 215999075802 |
20 | 968342883670 |
21 | 4357205440631 |
22 | 19650838467499 |
23 | 88894872008197 |
24 | 403000279608600 |
25 | 1831245639619344 |
26 | 8338814533961132 |
27 | 38040367001178855 |
[1,2,7,23,84,320,1246,5066,20658,86447,363905, 1551717,6680516,28928013,126428930,554487973, 2448780826,10853451220,48323714099,215999075802, 968342883670,4357205440631,19650838467499, 88894872008197,403000279608600,1831245639619344, 8338814533961132,38040367001178855] |