n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 5 |
3 | 8 |
4 | 55 |
5 | 140 |
6 | 633 |
7 | 1984 |
8 | 7827 |
9 | 26676 |
10 | 99621 |
11 | 351080 |
12 | 1283247 |
13 | 4583580 |
14 | 16611505 |
15 | 59652624 |
16 | 215457835 |
17 | 775371268 |
18 | 2796772765 |
19 | 10073343672 |
20 | 36315180295 |
21 | 130843331180 |
22 | 471599612393 |
23 | 1699398816608 |
24 | 6124635653443 |
25 | 22071172760532 |
26 | 79541846573973 |
[1,0,5,8,55,140,633,1984,7827,26676,99621,351080, 1283247,4583580,16611505,59652624,215457835, 775371268,2796772765,10073343672,36315180295, 130843331180,471599612393,1699398816608, 6124635653443,22071172760532,79541846573973] |