n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 13 |
4 | 68 |
5 | 395 |
6 | 2450 |
7 | 15892 |
8 | 106489 |
9 | 731379 |
10 | 5121392 |
11 | 36425796 |
12 | 262425982 |
13 | 1911063188 |
14 | 14044679173 |
15 | 104030937139 |
16 | 775856119012 |
17 | 5821085551579 |
18 | 43906627941144 |
19 | 332742274685104 |
20 | 2532358764929916 |
21 | 19346427410500788 |
22 | 148312939031577504 |
23 | 1140578980645677208 |
[1,3,13,68,395,2450,15892,106489,731379,5121392, 36425796,262425982,1911063188,14044679173, 104030937139,775856119012,5821085551579, 43906627941144,332742274685104,2532358764929916, 19346427410500788,148312939031577504, 1140578980645677208] |