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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 17 |
| 3 | 18 |
| 4 | 30 |
| 5 | 78 |
| 6 | 98 |
| 7 | 371 |
| 8 | 947 |
| 9 | 1085 |
| 10 | 1560 |
| 11 | 1607 |
| 12 | 2145 |
| 13 | 4310 |
| 14 | 4637 |
| 15 | 16674 |
| 16 | 17148 |
| 17 | 25209 |
| 18 | 27929 |
| 19 | 33491 |
| 20 | 74189 |
| 21 | 124809 |
| 22 | 142446 |
[3,17,18,30,78,98,371,947,1085,1560,1607,2145, 4310,4637,16674,17148,25209,27929,33491,74189, 124809,142446] |