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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 20 |
| 2 | 38 |
| 3 | 362 |
| 4 | 380 |
| 5 | 722 |
| 6 | 6860 |
| 7 | 6878 |
| 8 | 7220 |
| 9 | 13718 |
| 10 | 130322 |
| 11 | 130340 |
| 12 | 130682 |
| 13 | 137180 |
| 14 | 260642 |
| 15 | 2476100 |
| 16 | 2476118 |
| 17 | 2476460 |
| 18 | 2482958 |
| 19 | 2606420 |
| 20 | 4952198 |
| 21 | 47045882 |
| 22 | 47045900 |
| 23 | 47046242 |
| 24 | 47052740 |
| 25 | 47176202 |
| 26 | 49521980 |
| 27 | 94091762 |
| 28 | 893871740 |
| 29 | 893871758 |
| 30 | 893872100 |
[2,20,38,362,380,722,6860,6878,7220,13718,130322, 130340,130682,137180,260642,2476100,2476118, 2476460,2482958,2606420,4952198,47045882,47045900, 47046242,47052740,47176202,49521980,94091762, 893871740,893871758,893872100] |