The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 2 | 3 |
| 3 | 10 |
| 4 | 28 |
| 5 | 66 |
| 6 | 234 |
| 7 | 204 |
| 8 | 456 |
| 9 | 828 |
| 10 | 1392 |
| 11 | 2232 |
| 12 | 2220 |
| 13 | 5904 |
| 14 | 7224 |
| 15 | 5640 |
| 16 | 9540 |
| 17 | 14160 |
| 18 | 14640 |
| 19 | 28140 |
| 20 | 25560 |
| 21 | 26280 |
| 22 | 79632 |
| 23 | 89640 |
| 24 | 64080 |
| 25 | 69840 |
| 26 | 181800 |
| 27 | 129780 |
| 28 | 134820 |
| 29 | 183120 |
| 30 | 189840 |
| 31 | 213360 |
| 32 | 495180 |
| 33 | 460320 |
| 34 | 934080 |
| 35 | 1001280 |
| 36 | 380520 |
| 37 | 1243440 |
| 38 | 1779960 |
[3,10,28,66,234,204,456,828,1392,2232,2220,5904, 7224,5640,9540,14160,14640,28140,25560,26280, 79632,89640,64080,69840,181800,129780,134820, 183120,189840,213360,495180,460320,934080,1001280, 380520,1243440,1779960] |