n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 25 |
5 | 72 |
6 | 247 |
7 | 801 |
8 | 2790 |
9 | 9275 |
10 | 33417 |
11 | 116063 |
12 | 421415 |
13 | 1481888 |
14 | 5475112 |
15 | 19691593 |
16 | 73098992 |
17 | 264873884 |
18 | 993746300 |
19 | 3650365583 |
20 | 13739262338 |
21 | 50721769977 |
22 | 192273730672 |
23 | 716347593301 |
24 | 2721804119611 |
25 | 10176955599081 |
26 | 38866677109543 |
27 | 146278605785938 |
28 | 559635720503905 |
29 | 2111939759074536 |
[1,1,3,8,25,72,247,801,2790,9275,33417,116063, 421415,1481888,5475112,19691593,73098992, 264873884,993746300,3650365583,13739262338, 50721769977,192273730672,716347593301, 2721804119611,10176955599081,38866677109543, 146278605785938,559635720503905,2111939759074536] |