n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 14 |
4 | 46 |
5 | 150 |
6 | 590 |
7 | 2355 |
8 | 9521 |
9 | 39410 |
10 | 163110 |
11 | 680680 |
12 | 2847658 |
13 | 11910305 |
14 | 49901827 |
15 | 209178469 |
16 | 876800876 |
17 | 3676299398 |
18 | 15416057028 |
19 | 64644686369 |
20 | 271089072107 |
21 | 1136852511852 |
22 | 4767556349396 |
23 | 19993574426109 |
24 | 83847092409163 |
[1,4,14,46,150,590,2355,9521,39410,163110,680680, 2847658,11910305,49901827,209178469,876800876, 3676299398,15416057028,64644686369,271089072107, 1136852511852,4767556349396,19993574426109, 83847092409163] |