n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 19 |
5 | 60 |
6 | 237 |
7 | 850 |
8 | 3252 |
9 | 12168 |
10 | 46497 |
11 | 177052 |
12 | 679745 |
13 | 2612226 |
14 | 10079515 |
15 | 38961906 |
16 | 150982379 |
17 | 586067980 |
18 | 2278999145 |
19 | 8874984360 |
20 | 34609160383 |
21 | 135125659144 |
22 | 528166347564 |
23 | 2066529185116 |
24 | 8093134894351 |
[1,2,4,19,60,237,850,3252,12168,46497,177052, 679745,2612226,10079515,38961906,150982379, 586067980,2278999145,8874984360,34609160383, 135125659144,528166347564,2066529185116, 8093134894351] |