n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 11 |
3 | 51 |
4 | 275 |
5 | 1619 |
6 | 10067 |
7 | 64979 |
8 | 431059 |
9 | 2920403 |
10 | 20119507 |
11 | 140513235 |
12 | 992530387 |
13 | 7078367187 |
14 | 50896392147 |
15 | 368577073107 |
16 | 2685777334227 |
17 | 19678579249107 |
18 | 144888698621907 |
19 | 1071443581980627 |
20 | 7954422715502547 |
[1,3,11,51,275,1619,10067,64979,431059,2920403, 20119507,140513235,992530387,7078367187, 50896392147,368577073107,2685777334227, 19678579249107,144888698621907,1071443581980627, 7954422715502547] |