n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 7 |
6 | 10 |
7 | 34 |
8 | 278 |
9 | 751 |
10 | 2157 |
11 | 22208 |
12 | 676327 |
13 | 2225346 |
14 | 23259536 |
15 | 265050967 |
16 | 39161483067 |
17 | 70455119174849 |
18 | 776384598617893 |
19 | 133991542908557129 |
20 | 21819590324155207874 |
21 | 263763825614848727692 |
22 | 12883245190231409112736 |
23 | 661394651111310011564685 |
[0,1,2,5,7,10,34,278,751,2157,22208,676327, 2225346,23259536,265050967,39161483067, 70455119174849,776384598617893,133991542908557129, 21819590324155207874,263763825614848727692, 12883245190231409112736,661394651111310011564685] |