n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 22 |
5 | 67 |
6 | 228 |
7 | 775 |
8 | 2787 |
9 | 10096 |
10 | 37692 |
11 | 142300 |
12 | 546739 |
13 | 2124319 |
14 | 8349915 |
15 | 33135509 |
16 | 132647446 |
17 | 535088379 |
18 | 2174051788 |
19 | 8887400681 |
20 | 36550977240 |
21 | 151088635064 |
22 | 627703523526 |
23 | 2619294449873 |
24 | 10975951665533 |
25 | 46172369684781 |
26 | 194925589213610 |
27 | 825737811918024 |
28 | 3508786527526401 |
[1,1,3,7,22,67,228,775,2787,10096,37692,142300, 546739,2124319,8349915,33135509,132647446, 535088379,2174051788,8887400681,36550977240, 151088635064,627703523526,2619294449873, 10975951665533,46172369684781,194925589213610, 825737811918024,3508786527526401] |