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) |
|---|---|
| 1 | 2 |
| 2 | 6 |
| 3 | 30 |
| 4 | 210 |
| 5 | 6006 |
| 6 | 67830 |
| 7 | 690690 |
| 8 | 35303730 |
| 9 | 3383531970 |
| 10 | 29248649430 |
| 11 | 1846079805570 |
| 12 | 220495674290430 |
| 13 | 15231748284963210 |
| 14 | 328001307608664690 |
| 15 | 58030069605260142390 |
| 16 | 4938238739984380540710 |
| 17 | 182365421703667931839110 |
[2,6,30,210,6006,67830,690690,35303730,3383531970, 29248649430,1846079805570,220495674290430, 15231748284963210,328001307608664690, 58030069605260142390,4938238739984380540710, 182365421703667931839110] |