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| n | a(n) |
|---|---|
| 0 | 13 |
| 1 | 14 |
| 2 | 69 |
| 3 | 83 |
| 4 | 152 |
| 5 | 539 |
| 6 | 1230 |
| 7 | 2999 |
| 8 | 40217 |
| 9 | 83433 |
| 10 | 207083 |
| 11 | 704682 |
| 12 | 911765 |
| 13 | 1616447 |
| 14 | 7377553 |
| 15 | 8994000 |
| 16 | 241221553 |
| 17 | 250215553 |
| 18 | 1242083765 |
| 19 | 1492299318 |
| 20 | 2734383083 |
| 21 | 9695448567 |
| 22 | 22125280217 |
| 23 | 53946009001 |
[13,14,69,83,152,539,1230,2999,40217,83433,207083, 704682,911765,1616447,7377553,8994000,241221553, 250215553,1242083765,1492299318,2734383083, 9695448567,22125280217,53946009001] |