n | a(n) |
---|---|
1 | 2 |
2 | 14 |
3 | 73 |
4 | 400 |
5 | 2177 |
6 | 11854 |
7 | 64554 |
8 | 351521 |
9 | 1914208 |
10 | 10423761 |
11 | 56762346 |
12 | 309097942 |
13 | 1683185225 |
14 | 9165743600 |
15 | 49911830577 |
16 | 271793641686 |
17 | 1480045568402 |
18 | 8059551617921 |
19 | 43888089440192 |
20 | 238991507967969 |
21 | 1301422358761490 |
[2,14,73,400,2177,11854,64554,351521,1914208, 10423761,56762346,309097942,1683185225,9165743600, 49911830577,271793641686,1480045568402, 8059551617921,43888089440192,238991507967969, 1301422358761490] |