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| n | a(n) |
|---|---|
| 0 | 10 |
| 1 | 21 |
| 2 | 31 |
| 3 | 52 |
| 4 | 239 |
| 5 | 291 |
| 6 | 530 |
| 7 | 1351 |
| 8 | 27550 |
| 9 | 56451 |
| 10 | 84001 |
| 11 | 140452 |
| 12 | 645809 |
| 13 | 786261 |
| 14 | 1432070 |
| 15 | 3650401 |
| 16 | 74440090 |
| 17 | 152530581 |
| 18 | 226970671 |
| 19 | 379501252 |
| 20 | 1744975679 |
| 21 | 2124476931 |
| 22 | 3869452610 |
| 23 | 9863382151 |
| 24 | 201137095630 |
| 25 | 412137573411 |
| 26 | 613274669041 |
| 27 | 1025412242452 |
[10,21,31,52,239,291,530,1351,27550,56451,84001, 140452,645809,786261,1432070,3650401,74440090, 152530581,226970671,379501252,1744975679, 2124476931,3869452610,9863382151,201137095630, 412137573411,613274669041,1025412242452] |