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| n | a(n) |
|---|---|
| 1 | 112 |
| 2 | 392 |
| 3 | 1120 |
| 4 | 3920 |
| 5 | 11776 |
| 6 | 41216 |
| 7 | 128128 |
| 8 | 448448 |
| 9 | 1426432 |
| 10 | 4992512 |
| 11 | 16130560 |
| 12 | 56456960 |
| 13 | 184446976 |
| 14 | 645564416 |
| 15 | 2126645248 |
| 16 | 7443258368 |
| 17 | 24679432192 |
| 18 | 86378012672 |
| 19 | 287911321600 |
| 20 | 1007689625600 |
| 21 | 3373484670976 |
| 22 | 11807196348416 |
[112,392,1120,3920,11776,41216,128128,448448, 1426432,4992512,16130560,56456960,184446976, 645564416,2126645248,7443258368,24679432192, 86378012672,287911321600,1007689625600, 3373484670976,11807196348416] |