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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 5 |
| 3 | 19 |
| 4 | 24 |
| 5 | 43 |
| 6 | 67 |
| 7 | 780 |
| 8 | 847 |
| 9 | 5015 |
| 10 | 15892 |
| 11 | 132151 |
| 12 | 148043 |
| 13 | 280194 |
| 14 | 428237 |
| 15 | 708431 |
| 16 | 21681167 |
| 17 | 22389598 |
| 18 | 44070765 |
| 19 | 66460363 |
| 20 | 110531128 |
| 21 | 950709387 |
| 22 | 2962659289 |
| 23 | 15764005832 |
| 24 | 18726665121 |
| 25 | 221757322163 |
| 26 | 240483987284 |
| 27 | 462241309447 |
| 28 | 702725296731 |
| 29 | 2570417199640 |
[1,4,5,19,24,43,67,780,847,5015,15892,132151, 148043,280194,428237,708431,21681167,22389598, 44070765,66460363,110531128,950709387,2962659289, 15764005832,18726665121,221757322163,240483987284, 462241309447,702725296731,2570417199640] |