n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 50 |
3 | 357 |
4 | 2549 |
5 | 18200 |
6 | 129949 |
7 | 927843 |
8 | 6624850 |
9 | 47301793 |
10 | 337737401 |
11 | 2411463600 |
12 | 17217982601 |
13 | 122937341807 |
14 | 877779375250 |
15 | 6267392968557 |
16 | 44749530155149 |
17 | 319514104054600 |
18 | 2281348258537349 |
19 | 16288951913816043 |
20 | 116304011655249650 |
21 | 830417033500563593 |
[1,7,50,357,2549,18200,129949,927843,6624850, 47301793,337737401,2411463600,17217982601, 122937341807,877779375250,6267392968557, 44749530155149,319514104054600,2281348258537349, 16288951913816043,116304011655249650, 830417033500563593] |