n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 21 |
6 | 60 |
7 | 181 |
8 | 557 |
9 | 1741 |
10 | 5531 |
11 | 17778 |
12 | 57741 |
13 | 189191 |
14 | 624634 |
15 | 2076037 |
16 | 6940372 |
17 | 23322865 |
18 | 78739090 |
19 | 266933783 |
20 | 908335157 |
21 | 3101467309 |
22 | 10622722567 |
23 | 36486959455 |
24 | 125652837052 |
25 | 433761554314 |
26 | 1500704852813 |
27 | 5202773031536 |
28 | 18072036054031 |
29 | 62886222829136 |
30 | 219194323393547 |
[1,1,1,3,7,21,60,181,557,1741,5531,17778,57741, 189191,624634,2076037,6940372,23322865,78739090, 266933783,908335157,3101467309,10622722567, 36486959455,125652837052,433761554314, 1500704852813,5202773031536,18072036054031, 62886222829136,219194323393547] |