n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 22 |
5 | 100 |
6 | 548 |
7 | 3482 |
8 | 25256 |
9 | 206298 |
10 | 1871704 |
11 | 18676354 |
12 | 203323724 |
13 | 2397969518 |
14 | 30455963576 |
15 | 414446765490 |
16 | 6015821216380 |
17 | 92778775395190 |
18 | 1515047281161392 |
19 | 26114701159308242 |
20 | 473827422862284740 |
21 | 9027024454944900390 |
22 | 180165845677134636856 |
23 | 3759286756628732868754 |
24 | 81850596163629861103004 |
[1,1,2,6,22,100,548,3482,25256,206298,1871704, 18676354,203323724,2397969518,30455963576, 414446765490,6015821216380,92778775395190, 1515047281161392,26114701159308242, 473827422862284740,9027024454944900390, 180165845677134636856,3759286756628732868754, 81850596163629861103004] |