The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1 |
| 3 | 3 |
| 4 | -1 |
| 5 | 2 |
| 6 | -1 |
| 7 | 7 |
| 8 | 0 |
| 9 | 6 |
| 10 | 27 |
| 11 | 11 |
| 12 | 26 |
| 13 | 12 |
| 14 | 24 |
| 15 | 119 |
| 16 | 151 |
| 17 | 120 |
| 18 | 150 |
| 19 | 120 |
| 20 | 120 |
| 21 | 1203 |
| 22 | 1139 |
| 23 | 1202 |
| 24 | 1140 |
| 25 | 1200 |
| 26 | 1080 |
| 27 | 720 |
| 28 | 11759 |
| 29 | 11887 |
| 30 | 11760 |
| 31 | 11886 |
| 32 | 11760 |
| 33 | 11760 |
| 34 | 10080 |
| 35 | 5040 |
| 36 | 136587 |
| 37 | 136331 |
| 38 | 136586 |
| 39 | 136332 |
| 40 | 136584 |
| 41 | 136080 |
| 42 | 131040 |
| 43 | 100800 |
| 44 | 40320 |
| 45 | 1771559 |
| 46 | 1772071 |
| 47 | 1771560 |
| 48 | 1772070 |
[1,-1,1,3,-1,2,-1,7,0,6,27,11,26,12,24,119,151, 120,150,120,120,1203,1139,1202,1140,1200,1080,720, 11759,11887,11760,11886,11760,11760,10080,5040, 136587,136331,136586,136332,136584,136080,131040, 100800,40320,1771559,1772071,1771560,1772070] |