n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 7 |
3 | 37 |
4 | 176 |
5 | 794 |
6 | 3473 |
7 | 14893 |
8 | 63004 |
9 | 263950 |
10 | 1097790 |
11 | 4540386 |
12 | 18696432 |
13 | 76717268 |
14 | 313889477 |
15 | 1281220733 |
16 | 5219170052 |
17 | 21224674118 |
18 | 86188320962 |
19 | 349550141078 |
20 | 1416102710912 |
21 | 5731427140268 |
22 | 23177285611082 |
23 | 93655986978002 |
24 | 378195990166136 |
25 | 1526289367335244 |
[0,1,7,37,176,794,3473,14893,63004,263950,1097790, 4540386,18696432,76717268,313889477,1281220733, 5219170052,21224674118,86188320962,349550141078, 1416102710912,5731427140268,23177285611082, 93655986978002,378195990166136,1526289367335244] |