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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 4 |
| 3 | 9 |
| 4 | 60 |
| 5 | 72 |
| 6 | 75 |
| 7 | 84 |
| 8 | 348 |
| 9 | 592 |
| 10 | 1348 |
| 11 | 1380 |
| 12 | 1632 |
| 13 | 1855 |
| 14 | 2335 |
| 15 | 4528 |
| 16 | 9813 |
| 17 | 17103 |
| 18 | 28935 |
| 19 | 34023 |
| 20 | 100459 |
| 21 | 243544 |
| 22 | 281865 |
| 23 | 371844 |
| 24 | 648792 |
| 25 | 812035 |
| 26 | 886480 |
| 27 | 2080464 |
| 28 | 4146003 |
[3,4,9,60,72,75,84,348,592,1348,1380,1632,1855, 2335,4528,9813,17103,28935,34023,100459,243544, 281865,371844,648792,812035,886480,2080464, 4146003] |