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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 9 |
| 3 | 21 |
| 4 | 27 |
| 5 | 48 |
| 6 | 57 |
| 7 | 63 |
| 8 | 75 |
| 9 | 81 |
| 10 | 129 |
| 11 | 138 |
| 12 | 144 |
| 13 | 156 |
| 14 | 165 |
| 15 | 171 |
| 16 | 183 |
| 17 | 189 |
| 18 | 210 |
| 19 | 219 |
| 20 | 225 |
| 21 | 237 |
| 22 | 243 |
| 23 | 372 |
| 24 | 381 |
| 25 | 387 |
| 26 | 399 |
| 27 | 408 |
| 28 | 414 |
| 29 | 426 |
| 30 | 432 |
| 31 | 453 |
| 32 | 462 |
| 33 | 468 |
| 34 | 480 |
| 35 | 489 |
| 36 | 495 |
| 37 | 507 |
| 38 | 513 |
| 39 | 534 |
| 40 | 543 |
| 41 | 549 |
| 42 | 561 |
| 43 | 567 |
| 44 | 615 |
| 45 | 624 |
| 46 | 630 |
| 47 | 642 |
| 48 | 651 |
[3,9,21,27,48,57,63,75,81,129,138,144,156,165,171, 183,189,210,219,225,237,243,372,381,387,399,408, 414,426,432,453,462,468,480,489,495,507,513,534, 543,549,561,567,615,624,630,642,651] |