n | a(n) |
---|---|
1 | 4 |
2 | 30 |
3 | 133 |
4 | 587 |
5 | 2559 |
6 | 11251 |
7 | 49293 |
8 | 216274 |
9 | 948407 |
10 | 4159753 |
11 | 18243646 |
12 | 80014078 |
13 | 350927303 |
14 | 1539109339 |
15 | 6750270615 |
16 | 29605549628 |
17 | 129844926004 |
18 | 569477896562 |
19 | 2497633716174 |
20 | 10954199079473 |
21 | 48043264384017 |
22 | 210709631957358 |
[4,30,133,587,2559,11251,49293,216274,948407, 4159753,18243646,80014078,350927303,1539109339, 6750270615,29605549628,129844926004,569477896562, 2497633716174,10954199079473,48043264384017, 210709631957358] |