Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 18 |
3 | 108 |
4 | 660 |
5 | 4275 |
6 | 29106 |
7 | 205377 |
8 | 1485279 |
9 | 10943424 |
10 | 81866493 |
11 | 620316297 |
12 | 4751289063 |
13 | 36727782675 |
14 | 286153810542 |
15 | 2244799306134 |
16 | 17715992048886 |
17 | 140560480602810 |
18 | 1120518766292436 |
19 | 8970573523101477 |
20 | 72091628161825608 |
21 | 581375787259765554 |
22 | 4703286596619094686 |
[1,3,18,108,660,4275,29106,205377,1485279, 10943424,81866493,620316297,4751289063, 36727782675,286153810542,2244799306134, 17715992048886,140560480602810,1120518766292436, 8970573523101477,72091628161825608, 581375787259765554,4703286596619094686] |