n | a(n) |
---|---|
0 | 2 |
1 | 1 |
2 | 9 |
3 | 13 |
4 | 49 |
5 | 101 |
6 | 297 |
7 | 701 |
8 | 1889 |
9 | 4693 |
10 | 12249 |
11 | 31021 |
12 | 80017 |
13 | 204101 |
14 | 524169 |
15 | 1340573 |
16 | 3437249 |
17 | 8799541 |
18 | 22548537 |
19 | 57746701 |
20 | 147940849 |
21 | 378927653 |
22 | 970691049 |
23 | 2486401661 |
24 | 6369165857 |
25 | 16314772501 |
26 | 41791435929 |
27 | 107050525933 |
28 | 274216269649 |
29 | 702418373381 |
[2,1,9,13,49,101,297,701,1889,4693,12249,31021, 80017,204101,524169,1340573,3437249,8799541, 22548537,57746701,147940849,378927653,970691049, 2486401661,6369165857,16314772501,41791435929, 107050525933,274216269649,702418373381] |