n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 38 |
5 | 127 |
6 | 493 |
7 | 1841 |
8 | 7280 |
9 | 28878 |
10 | 116567 |
11 | 478811 |
12 | 1973493 |
13 | 8272377 |
14 | 34738919 |
15 | 147542225 |
16 | 629264252 |
17 | 2700080188 |
18 | 11655144044 |
19 | 50463437540 |
20 | 219806610774 |
21 | 959526286345 |
22 | 4208678301965 |
23 | 18506049432901 |
24 | 81640804619981 |
25 | 361209023120827 |
26 | 1601666859421432 |
27 | 7122833707402200 |
[1,1,4,10,38,127,493,1841,7280,28878,116567, 478811,1973493,8272377,34738919,147542225, 629264252,2700080188,11655144044,50463437540, 219806610774,959526286345,4208678301965, 18506049432901,81640804619981,361209023120827, 1601666859421432,7122833707402200] |