n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 5 |
6 | 13 |
7 | 33 |
8 | 217 |
9 | 617 |
10 | 1633 |
11 | 10813 |
12 | 30805 |
13 | 81601 |
14 | 540401 |
15 | 1539601 |
16 | 4078401 |
17 | 27009205 |
18 | 76949213 |
19 | 203838433 |
20 | 1349919817 |
21 | 3845921017 |
22 | 10187843233 |
23 | 67468981613 |
24 | 192219101605 |
25 | 509188323201 |
26 | 3372099160801 |
27 | 9607109159201 |
28 | 25449228316801 |
29 | 168537489058405 |
[1,1,1,1,5,13,33,217,617,1633,10813,30805,81601, 540401,1539601,4078401,27009205,76949213, 203838433,1349919817,3845921017,10187843233, 67468981613,192219101605,509188323201, 3372099160801,9607109159201,25449228316801, 168537489058405] |