n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 39 |
5 | 133 |
6 | 503 |
7 | 1903 |
8 | 7473 |
9 | 29283 |
10 | 117340 |
11 | 472735 |
12 | 1923988 |
13 | 7866991 |
14 | 32415016 |
15 | 134128943 |
16 | 557609799 |
17 | 2326658582 |
18 | 9745447103 |
19 | 40938439634 |
20 | 172464891400 |
21 | 728418140034 |
22 | 3083825574858 |
23 | 13082628817159 |
24 | 55610642800671 |
25 | 236812974175072 |
26 | 1010124338572475 |
27 | 4315286500849177 |
[1,1,4,10,39,133,503,1903,7473,29283,117340, 472735,1923988,7866991,32415016,134128943, 557609799,2326658582,9745447103,40938439634, 172464891400,728418140034,3083825574858, 13082628817159,55610642800671,236812974175072, 1010124338572475,4315286500849177] |