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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 17 |
| 2 | 170 |
| 3 | 1275 |
| 4 | 7905 |
| 5 | 42619 |
| 6 | 206091 |
| 7 | 912459 |
| 8 | 3753328 |
| 9 | 14500320 |
| 10 | 53053498 |
| 11 | 185046190 |
| 12 | 618555931 |
| 13 | 1990227519 |
| 14 | 6186291009 |
| 15 | 18633598578 |
| 16 | 54530992072 |
| 17 | 155401842842 |
| 18 | 432109571275 |
| 19 | 1174385295541 |
| 20 | 3124445373406 |
| 21 | 8148428799893 |
| 22 | 20856618453595 |
| 23 | 52451748129498 |
[1,17,170,1275,7905,42619,206091,912459,3753328, 14500320,53053498,185046190,618555931,1990227519, 6186291009,18633598578,54530992072,155401842842, 432109571275,1174385295541,3124445373406, 8148428799893,20856618453595,52451748129498] |