Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 3 |
2 | 21 |
3 | 129 |
4 | 777 |
5 | 4665 |
6 | 27993 |
7 | 167961 |
8 | 1007769 |
9 | 6046617 |
10 | 36279705 |
11 | 217678233 |
12 | 1306069401 |
13 | 7836416409 |
14 | 47018498457 |
15 | 282110990745 |
16 | 1692665944473 |
17 | 10155995666841 |
18 | 60935974001049 |
19 | 365615844006297 |
20 | 2193695064037785 |
21 | 13162170384226713 |
22 | 78973022305360281 |
[3,21,129,777,4665,27993,167961,1007769,6046617, 36279705,217678233,1306069401,7836416409, 47018498457,282110990745,1692665944473, 10155995666841,60935974001049,365615844006297, 2193695064037785,13162170384226713, 78973022305360281] |