n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 11 |
5 | 19 |
6 | 90 |
7 | 153 |
8 | 712 |
9 | 1208 |
10 | 5609 |
11 | 9514 |
12 | 44163 |
13 | 74907 |
14 | 347698 |
15 | 589745 |
16 | 2737424 |
17 | 4643056 |
18 | 21551697 |
19 | 36554706 |
20 | 169676155 |
21 | 287794595 |
22 | 1335857546 |
23 | 2265802057 |
24 | 10517184216 |
25 | 17838621864 |
26 | 82801616185 |
27 | 140443172858 |
28 | 651895745267 |
[0,1,2,11,19,90,153,712,1208,5609,9514,44163, 74907,347698,589745,2737424,4643056,21551697, 36554706,169676155,287794595,1335857546, 2265802057,10517184216,17838621864,82801616185, 140443172858,651895745267] |