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 | 4 |
| 3 | 1 |
| 4 | 20 |
| 5 | 4 |
| 6 | 1 |
| 7 | 120 |
| 8 | 20 |
| 9 | 16 |
| 10 | 4 |
| 11 | 1 |
| 12 | 840 |
| 13 | 120 |
| 14 | 80 |
| 15 | 20 |
| 16 | 16 |
| 17 | 4 |
| 18 | 1 |
| 19 | 6720 |
| 20 | 840 |
| 21 | 480 |
| 22 | 400 |
| 23 | 120 |
| 24 | 80 |
| 25 | 64 |
| 26 | 20 |
| 27 | 16 |
| 28 | 4 |
| 29 | 1 |
| 30 | 60480 |
| 31 | 6720 |
| 32 | 3360 |
| 33 | 2400 |
| 34 | 840 |
| 35 | 480 |
| 36 | 400 |
| 37 | 320 |
| 38 | 120 |
| 39 | 80 |
| 40 | 64 |
| 41 | 20 |
| 42 | 16 |
| 43 | 4 |
| 44 | 1 |
| 45 | 604800 |
| 46 | 60480 |
| 47 | 26880 |
| 48 | 16800 |
| 49 | 14400 |
| 50 | 6720 |
| 51 | 3360 |
| 52 | 2400 |
| 53 | 1920 |
| 54 | 1600 |
| 55 | 840 |
| 56 | 480 |
| 57 | 400 |
| 58 | 320 |
[1,4,1,20,4,1,120,20,16,4,1,840,120,80,20,16,4,1, 6720,840,480,400,120,80,64,20,16,4,1,60480,6720, 3360,2400,840,480,400,320,120,80,64,20,16,4,1, 604800,60480,26880,16800,14400,6720,3360,2400, 1920,1600,840,480,400,320] |