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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 19 |
| 2 | 39 |
| 3 | 58 |
| 4 | 329 |
| 5 | 387 |
| 6 | 1490 |
| 7 | 1877 |
| 8 | 3367 |
| 9 | 5244 |
| 10 | 8611 |
| 11 | 13855 |
| 12 | 36321 |
| 13 | 231781 |
| 14 | 268102 |
| 15 | 2108495 |
| 16 | 4485092 |
| 17 | 15563771 |
| 18 | 35612634 |
| 19 | 86789039 |
| 20 | 990292063 |
| 21 | 4047957291 |
| 22 | 5038249354 |
| 23 | 19162705353 |
| 24 | 273316124296 |
| 25 | 839111078241 |
| 26 | 1112427202537 |
| 27 | 5288819888389 |
| 28 | 59289445974816 |
[1,19,39,58,329,387,1490,1877,3367,5244,8611, 13855,36321,231781,268102,2108495,4485092, 15563771,35612634,86789039,990292063,4047957291, 5038249354,19162705353,273316124296,839111078241, 1112427202537,5288819888389,59289445974816] |