n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 6 |
6 | 13 |
7 | 32 |
8 | 87 |
9 | 243 |
10 | 654 |
11 | 1782 |
12 | 4914 |
13 | 13664 |
14 | 37994 |
15 | 106288 |
16 | 298890 |
17 | 844182 |
18 | 2391363 |
19 | 6796160 |
20 | 19369708 |
21 | 55345784 |
22 | 158489298 |
23 | 454795398 |
24 | 1307541690 |
25 | 3765741324 |
26 | 10862688116 |
27 | 31381059609 |
28 | 90780903460 |
29 | 262951692390 |
[1,1,1,2,6,13,32,87,243,654,1782,4914,13664,37994, 106288,298890,844182,2391363,6796160,19369708, 55345784,158489298,454795398,1307541690, 3765741324,10862688116,31381059609,90780903460, 262951692390] |