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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 155 |
| 3 | 885 |
| 4 | 2639 |
| 5 | 5865 |
| 6 | 11011 |
| 7 | 18525 |
| 8 | 28855 |
| 9 | 42449 |
| 10 | 59755 |
| 11 | 81221 |
| 12 | 107295 |
| 13 | 138425 |
| 14 | 175059 |
| 15 | 217645 |
| 16 | 266631 |
| 17 | 322465 |
| 18 | 385595 |
| 19 | 456469 |
| 20 | 535535 |
| 21 | 623241 |
| 22 | 720035 |
| 23 | 826365 |
| 24 | 942679 |
| 25 | 1069425 |
| 26 | 1207051 |
| 27 | 1356005 |
| 28 | 1516735 |
| 29 | 1689689 |
| 30 | 1875315 |
| 31 | 2074061 |
| 32 | 2286375 |
| 33 | 2512705 |
[1,155,885,2639,5865,11011,18525,28855,42449, 59755,81221,107295,138425,175059,217645,266631, 322465,385595,456469,535535,623241,720035,826365, 942679,1069425,1207051,1356005,1516735,1689689, 1875315,2074061,2286375,2512705] |