n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 11 |
4 | 58 |
5 | 212 |
6 | 1304 |
7 | 5567 |
8 | 37734 |
9 | 178148 |
10 | 1284124 |
11 | 6501420 |
12 | 48758648 |
13 | 259775440 |
14 | 2000594288 |
15 | 11080668871 |
16 | 86930955662 |
17 | 496461841956 |
18 | 3947716126292 |
19 | 23113333523180 |
20 | 185660199980696 |
21 | 1109722749130576 |
22 | 8983793097101144 |
23 | 54645629076275356 |
24 | 445109373450545608 |
25 | 2748480598104423952 |
[1,1,4,11,58,212,1304,5567,37734,178148,1284124, 6501420,48758648,259775440,2000594288,11080668871, 86930955662,496461841956,3947716126292, 23113333523180,185660199980696,1109722749130576, 8983793097101144,54645629076275356, 445109373450545608,2748480598104423952] |