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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 144 |
| 2 | 264 |
| 3 | 724 |
| 4 | 2097 |
| 5 | 6388 |
| 6 | 20168 |
| 7 | 65416 |
| 8 | 216286 |
| 9 | 725208 |
| 10 | 2457738 |
| 11 | 8398428 |
| 12 | 28882214 |
| 13 | 99811780 |
| 14 | 346190276 |
| 15 | 1203840960 |
| 16 | 4193106473 |
| 17 | 14616481492 |
| 18 | 50950086836 |
| 19 | 177468099920 |
| 20 | 617261864317 |
| 21 | 2142475178740 |
| 22 | 7416625966122 |
| 23 | 25592444012160 |
| 24 | 87988338886088 |
[1,144,264,724,2097,6388,20168,65416,216286, 725208,2457738,8398428,28882214,99811780, 346190276,1203840960,4193106473,14616481492, 50950086836,177468099920,617261864317, 2142475178740,7416625966122,25592444012160, 87988338886088] |