Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
2 | 1 |
3 | 7 |
4 | 38 |
5 | 190 |
6 | 918 |
7 | 4365 |
8 | 20594 |
9 | 96804 |
10 | 454362 |
11 | 2132121 |
12 | 10010203 |
13 | 47042042 |
14 | 221337726 |
15 | 1042837195 |
16 | 4920447410 |
17 | 23250646651 |
18 | 110029743083 |
19 | 521462857972 |
20 | 2474929099976 |
21 | 11762845907633 |
22 | 55982738983975 |
23 | 266789302547057 |
[1,7,38,190,918,4365,20594,96804,454362,2132121, 10010203,47042042,221337726,1042837195,4920447410, 23250646651,110029743083,521462857972, 2474929099976,11762845907633,55982738983975, 266789302547057] |