The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 5 |
| 7 | 30 |
| 8 | 105 |
| 9 | 70 |
| 10 | 35 |
| 11 | 70 |
| 12 | 231 |
| 13 | 2310 |
| 14 | 143 |
| 15 | 30030 |
| 16 | 15015 |
| 17 | 10010 |
| 18 | 85085 |
| 19 | 170170 |
| 20 | 373065 |
| 21 | 25194 |
| 22 | 323323 |
| 23 | 1939938 |
| 24 | 22309287 |
| 25 | 14872858 |
| 26 | 168245 |
| 27 | 74364290 |
| 28 | 15935205 |
| 29 | 223092870 |
| 30 | 1078282205 |
| 31 | 588153930 |
| 32 | 20056049013 |
| 33 | 5142576670 |
| 34 | 393255863 |
| 35 | 9550499530 |
[1,1,1,2,3,6,5,30,105,70,35,70,231,2310,143,30030, 15015,10010,85085,170170,373065,25194,323323, 1939938,22309287,14872858,168245,74364290, 15935205,223092870,1078282205,588153930, 20056049013,5142576670,393255863,9550499530] |