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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 15 |
| 2 | 79 |
| 3 | 253 |
| 4 | 621 |
| 5 | 1291 |
| 6 | 2395 |
| 7 | 4089 |
| 8 | 6553 |
| 9 | 9991 |
| 10 | 14631 |
| 11 | 20725 |
| 12 | 28549 |
| 13 | 38403 |
| 14 | 50611 |
| 15 | 65521 |
| 16 | 83505 |
| 17 | 104959 |
| 18 | 130303 |
| 19 | 159981 |
| 20 | 194461 |
| 21 | 234235 |
| 22 | 279819 |
| 23 | 331753 |
| 24 | 390601 |
| 25 | 456951 |
| 26 | 531415 |
| 27 | 614629 |
| 28 | 707253 |
| 29 | 809971 |
| 30 | 923491 |
| 31 | 1048545 |
| 32 | 1185889 |
| 33 | 1336303 |
[1,15,79,253,621,1291,2395,4089,6553,9991,14631, 20725,28549,38403,50611,65521,83505,104959,130303, 159981,194461,234235,279819,331753,390601,456951, 531415,614629,707253,809971,923491,1048545, 1185889,1336303] |