n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 4 |
4 | 13 |
5 | 38 |
6 | 102 |
7 | 259 |
8 | 626 |
9 | 1457 |
10 | 3287 |
11 | 7224 |
12 | 15529 |
13 | 32746 |
14 | 67907 |
15 | 138767 |
16 | 279895 |
17 | 558020 |
18 | 1100930 |
19 | 2151610 |
20 | 4169060 |
21 | 8015125 |
22 | 15299090 |
23 | 29010460 |
24 | 54676270 |
25 | 102469595 |
26 | 191037405 |
27 | 354426478 |
28 | 654575187 |
29 | 1203777114 |
30 | 2204962989 |
[0,1,4,13,38,102,259,626,1457,3287,7224,15529, 32746,67907,138767,279895,558020,1100930,2151610, 4169060,8015125,15299090,29010460,54676270, 102469595,191037405,354426478,654575187, 1203777114,2204962989] |