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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 21 |
| 2 | 52 |
| 3 | 172 |
| 4 | 268 |
| 5 | 428 |
| 6 | 588 |
| 7 | 812 |
| 8 | 1004 |
| 9 | 1324 |
| 10 | 1580 |
| 11 | 1900 |
| 12 | 2252 |
| 13 | 2668 |
| 14 | 2988 |
| 15 | 3532 |
| 16 | 3916 |
| 17 | 4460 |
| 18 | 5004 |
| 19 | 5548 |
| 20 | 6028 |
| 21 | 6764 |
| 22 | 7308 |
| 23 | 8044 |
| 24 | 8716 |
| 25 | 9548 |
| 26 | 10156 |
| 27 | 11116 |
| 28 | 11852 |
| 29 | 12620 |
| 30 | 13548 |
| 31 | 14444 |
| 32 | 15244 |
| 33 | 16524 |
| 34 | 17228 |
| 35 | 18380 |
| 36 | 19340 |
| 37 | 20588 |
| 38 | 21548 |
[1,21,52,172,268,428,588,812,1004,1324,1580,1900, 2252,2668,2988,3532,3916,4460,5004,5548,6028,6764, 7308,8044,8716,9548,10156,11116,11852,12620,13548, 14444,15244,16524,17228,18380,19340,20588,21548] |