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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 43 |
| 2 | 903 |
| 3 | 12341 |
| 4 | 123410 |
| 5 | 962598 |
| 6 | 6096454 |
| 7 | 32224114 |
| 8 | 145008513 |
| 9 | 563921995 |
| 10 | 1917334783 |
| 11 | 5752004349 |
| 12 | 15338678264 |
| 13 | 36576848168 |
| 14 | 78378960360 |
| 15 | 151532656696 |
| 16 | 265182149218 |
| 17 | 421171648758 |
| 18 | 608359048206 |
| 19 | 800472431850 |
| 20 | 960566918220 |
| 21 | 1052049481860 |
| 22 | 1052049481860 |
[1,43,903,12341,123410,962598,6096454,32224114, 145008513,563921995,1917334783,5752004349, 15338678264,36576848168,78378960360,151532656696, 265182149218,421171648758,608359048206, 800472431850,960566918220,1052049481860, 1052049481860] |