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| n | a(n) |
|---|---|
| 0 | 14 |
| 1 | 70 |
| 2 | 300 |
| 3 | 1225 |
| 4 | 4900 |
| 5 | 19404 |
| 6 | 76440 |
| 7 | 300300 |
| 8 | 1178100 |
| 9 | 4618900 |
| 10 | 18106088 |
| 11 | 70984095 |
| 12 | 278369000 |
| 13 | 1092063000 |
| 14 | 4286142000 |
| 15 | 16830250920 |
| 16 | 66118842900 |
| 17 | 259878874500 |
| 18 | 1021939149000 |
| 19 | 4020523757250 |
| 20 | 15824781508536 |
| 21 | 62313700079400 |
| 22 | 245478212434000 |
| 23 | 967428110493000 |
| 24 | 3814113125277000 |
[14,70,300,1225,4900,19404,76440,300300,1178100, 4618900,18106088,70984095,278369000,1092063000, 4286142000,16830250920,66118842900,259878874500, 1021939149000,4020523757250,15824781508536, 62313700079400,245478212434000,967428110493000, 3814113125277000] |