| n | a(n) |
|---|---|
| 1 | 30 |
| 2 | 219 |
| 3 | 950 |
| 4 | 2833 |
| 5 | 6916 |
| 6 | 14859 |
| 7 | 29588 |
| 8 | 53105 |
| 9 | 91096 |
| 10 | 142873 |
| 11 | 221230 |
| 12 | 329953 |
| 13 | 486452 |
| 14 | 685227 |
| 15 | 953512 |
| 16 | 1261375 |
| 17 | 1692336 |
| 18 | 2215665 |
| 19 | 2897664 |
| 20 | 3691943 |
| 21 | 4607584 |
| 22 | 5752875 |
| 23 | 7157736 |
| 24 | 8770613 |
| 25 | 10766662 |
| 26 | 12925703 |
| 27 | 15444348 |
| 28 | 18397849 |
| 29 | 21891900 |
[30,219,950,2833,6916,14859,29588,53105,91096, 142873,221230,329953,486452,685227,953512,1261375, 1692336,2215665,2897664,3691943,4607584,5752875, 7157736,8770613,10766662,12925703,15444348, 18397849,21891900] |