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| n | a(n) |
|---|---|
| 0 | 5 |
| 1 | 30 |
| 2 | 200 |
| 3 | 1365 |
| 4 | 9350 |
| 5 | 64080 |
| 6 | 439205 |
| 7 | 3010350 |
| 8 | 20633240 |
| 9 | 141422325 |
| 10 | 969323030 |
| 11 | 6643838880 |
| 12 | 45537549125 |
| 13 | 312119004990 |
| 14 | 2139295485800 |
| 15 | 14662949395605 |
| 16 | 100501350283430 |
| 17 | 688846502588400 |
| 18 | 4721424167835365 |
| 19 | 32361122672259150 |
| 20 | 221806434537978680 |
| 21 | 1520283919093591605 |
[5,30,200,1365,9350,64080,439205,3010350,20633240, 141422325,969323030,6643838880,45537549125, 312119004990,2139295485800,14662949395605, 100501350283430,688846502588400,4721424167835365, 32361122672259150,221806434537978680, 1520283919093591605] |