n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 12 |
3 | 34 |
4 | 93 |
5 | 255 |
6 | 693 |
7 | 1884 |
8 | 5122 |
9 | 13923 |
10 | 37847 |
11 | 102880 |
12 | 279658 |
13 | 760190 |
14 | 2066413 |
15 | 5617093 |
16 | 15268842 |
17 | 41505016 |
18 | 112822331 |
19 | 306682894 |
20 | 833650539 |
21 | 2266097111 |
22 | 6159890600 |
23 | 16744318683 |
24 | 45515777207 |
25 | 123724710091 |
26 | 336318631172 |
27 | 914208823689 |
28 | 2485077232852 |
29 | 6755140284380 |
[1,4,12,34,93,255,693,1884,5122,13923,37847, 102880,279658,760190,2066413,5617093,15268842, 41505016,112822331,306682894,833650539,2266097111, 6159890600,16744318683,45515777207,123724710091, 336318631172,914208823689,2485077232852, 6755140284380] |