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| n | a(n) |
|---|---|
| 0 | 30 |
| 1 | 91 |
| 2 | 212 |
| 3 | 303 |
| 4 | 2030 |
| 5 | 61203 |
| 6 | 369248 |
| 7 | 430451 |
| 8 | 1230150 |
| 9 | 4120901 |
| 10 | 248484210 |
| 11 | 749573531 |
| 12 | 1747631272 |
| 13 | 2497204803 |
| 14 | 16730860090 |
| 15 | 504423007503 |
| 16 | 3043268905108 |
| 17 | 3547691912611 |
| 18 | 10138652730330 |
| 19 | 33963650103601 |
| 20 | 2047957658946390 |
| 21 | 6177836626942771 |
| 22 | 14403630912831932 |
[30,91,212,303,2030,61203,369248,430451,1230150, 4120901,248484210,749573531,1747631272,2497204803, 16730860090,504423007503,3043268905108, 3547691912611,10138652730330,33963650103601, 2047957658946390,6177836626942771, 14403630912831932] |