n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 21 |
6 | 52 |
7 | 129 |
8 | 332 |
9 | 859 |
10 | 2261 |
11 | 5983 |
12 | 15976 |
13 | 42836 |
14 | 115469 |
15 | 312246 |
16 | 847241 |
17 | 2304522 |
18 | 6283327 |
19 | 17164401 |
20 | 46972357 |
21 | 128741107 |
22 | 353345434 |
23 | 970999198 |
24 | 2671347292 |
25 | 7356752678 |
26 | 20279171785 |
27 | 55948407837 |
28 | 154479213626 |
29 | 426845422807 |
30 | 1180229767202 |
[1,2,4,9,21,52,129,332,859,2261,5983,15976,42836, 115469,312246,847241,2304522,6283327,17164401, 46972357,128741107,353345434,970999198,2671347292, 7356752678,20279171785,55948407837,154479213626, 426845422807,1180229767202] |