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 | 1 |
| 2 | 15 |
| 3 | 1 |
| 4 | 120 |
| 5 | 30 |
| 6 | 1 |
| 7 | 540 |
| 8 | 465 |
| 9 | 45 |
| 10 | 1 |
| 11 | 1296 |
| 12 | 4680 |
| 13 | 1035 |
| 14 | 60 |
| 15 | 1 |
| 16 | 1296 |
| 17 | 33192 |
| 18 | 15795 |
| 19 | 1830 |
| 20 | 75 |
| 21 | 1 |
| 22 | 0 |
| 23 | 171072 |
| 24 | 176688 |
| 25 | 37260 |
| 26 | 2850 |
| 27 | 90 |
| 28 | 1 |
| 29 | 0 |
| 30 | 641520 |
| 31 | 1521828 |
| 32 | 563409 |
| 33 | 72450 |
| 34 | 4095 |
| 35 | 105 |
| 36 | 1 |
| 37 | 0 |
| 38 | 1710720 |
| 39 | 10359360 |
| 40 | 6686064 |
| 41 | 1375605 |
| 42 | 124740 |
| 43 | 5565 |
| 44 | 120 |
| 45 | 1 |
[1,15,1,120,30,1,540,465,45,1,1296,4680,1035,60,1, 1296,33192,15795,1830,75,1,0,171072,176688,37260, 2850,90,1,0,641520,1521828,563409,72450,4095,105, 1,0,1710720,10359360,6686064,1375605,124740,5565, 120,1] |