n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 16 |
5 | 60 |
6 | 253 |
7 | 1180 |
8 | 6023 |
9 | 33306 |
10 | 197719 |
11 | 1250906 |
12 | 8387942 |
13 | 59357195 |
14 | 441685485 |
15 | 3444965562 |
16 | 28082207264 |
17 | 238628007349 |
18 | 2108871422308 |
19 | 19343221199365 |
20 | 183810517195168 |
21 | 1806639257820732 |
22 | 18339886099839327 |
23 | 192028550724708334 |
24 | 2071309027341071260 |
[1,1,2,5,16,60,253,1180,6023,33306,197719,1250906, 8387942,59357195,441685485,3444965562,28082207264, 238628007349,2108871422308,19343221199365, 183810517195168,1806639257820732, 18339886099839327,192028550724708334, 2071309027341071260] |