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| n | a(n) |
|---|---|
| 1 | 153 |
| 2 | 351 |
| 3 | 17578 |
| 4 | 87571 |
| 5 | 185745 |
| 6 | 547581 |
| 7 | 1461195 |
| 8 | 5911641 |
| 9 | 12145056 |
| 10 | 12517506 |
| 11 | 60571521 |
| 12 | 65054121 |
| 13 | 304119453 |
| 14 | 354911403 |
| 15 | 1775275491 |
| 16 | 1945725771 |
| 17 | 10246462281 |
| 18 | 17990863516 |
| 19 | 18226464201 |
| 20 | 35615002605 |
| 21 | 50620051653 |
| 22 | 61536809971 |
| 23 | 1222080857271 |
| 24 | 1664224065406 |
[153,351,17578,87571,185745,547581,1461195, 5911641,12145056,12517506,60571521,65054121, 304119453,354911403,1775275491,1945725771, 10246462281,17990863516,18226464201,35615002605, 50620051653,61536809971,1222080857271, 1664224065406] |