n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 7 |
3 | 41 |
4 | 211 |
5 | 1009 |
6 | 4621 |
7 | 20593 |
8 | 90091 |
9 | 388961 |
10 | 1662805 |
11 | 7054321 |
12 | 29745717 |
13 | 124807201 |
14 | 521515801 |
15 | 2171645281 |
16 | 9016205851 |
17 | 37337699521 |
18 | 154277300101 |
19 | 636214748401 |
20 | 2619084047581 |
21 | 10765157488801 |
22 | 44186078238121 |
23 | 181135476007201 |
24 | 741694884711301 |
[0,1,7,41,211,1009,4621,20593,90091,388961, 1662805,7054321,29745717,124807201,521515801, 2171645281,9016205851,37337699521,154277300101, 636214748401,2619084047581,10765157488801, 44186078238121,181135476007201,741694884711301] |