Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 18 |
4 | 252 |
5 | 4940 |
6 | 124350 |
7 | 3823722 |
8 | 138915560 |
9 | 5822192952 |
10 | 276522143130 |
11 | 14677209803630 |
12 | 860990013672492 |
13 | 55315008281020644 |
14 | 3862656545279925302 |
15 | 291301089508829138130 |
16 | 23595204076694940812880 |
17 | 2042970533426395737658352 |
18 | 188298566037963463789282482 |
[1,2,18,252,4940,124350,3823722,138915560, 5822192952,276522143130,14677209803630, 860990013672492,55315008281020644, 3862656545279925302,291301089508829138130, 23595204076694940812880,2042970533426395737658352, 188298566037963463789282482] |