n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 30 |
6 | 96 |
7 | 323 |
8 | 1184 |
9 | 4784 |
10 | 20708 |
11 | 93073 |
12 | 431004 |
13 | 2080610 |
14 | 10615276 |
15 | 57291063 |
16 | 322921896 |
17 | 1871715144 |
18 | 11065738360 |
19 | 66843918825 |
20 | 415837464280 |
21 | 2684434034706 |
22 | 18010208402784 |
23 | 124877499979859 |
24 | 886741484322660 |
25 | 6399683149311272 |
26 | 46802092819866340 |
[1,1,2,4,10,30,96,323,1184,4784,20708,93073, 431004,2080610,10615276,57291063,322921896, 1871715144,11065738360,66843918825,415837464280, 2684434034706,18010208402784,124877499979859, 886741484322660,6399683149311272, 46802092819866340] |