n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 8 |
5 | 18 |
6 | 43 |
7 | 103 |
8 | 255 |
9 | 642 |
10 | 1640 |
11 | 4242 |
12 | 11096 |
13 | 29278 |
14 | 77882 |
15 | 208589 |
16 | 562056 |
17 | 1522606 |
18 | 4144521 |
19 | 11329608 |
20 | 31090910 |
21 | 85618848 |
22 | 236530942 |
23 | 655344579 |
24 | 1820585313 |
25 | 5070138554 |
26 | 14151907583 |
27 | 39584395796 |
28 | 110938500821 |
29 | 311481097178 |
[1,1,2,4,8,18,43,103,255,642,1640,4242,11096, 29278,77882,208589,562056,1522606,4144521, 11329608,31090910,85618848,236530942,655344579, 1820585313,5070138554,14151907583,39584395796, 110938500821,311481097178] |