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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 5 |
| 2 | 17 |
| 3 | 73 |
| 4 | 113 |
| 5 | 197 |
| 6 | 461 |
| 7 | 1493 |
| 8 | 1801 |
| 9 | 9533 |
| 10 | 15661 |
| 11 | 16741 |
| 12 | 33181 |
| 13 | 39581 |
| 14 | 50593 |
| 15 | 180797 |
| 16 | 183089 |
| 17 | 1561829 |
| 18 | 1637813 |
| 19 | 2243909 |
| 20 | 4468889 |
| 21 | 4874717 |
| 22 | 7856441 |
| 23 | 10087201 |
| 24 | 12021029 |
| 25 | 12213913 |
| 26 | 18226661 |
| 27 | 148363637 |
| 28 | 292182097 |
| 29 | 320262253 |
| 30 | 468213937 |
[2,5,17,73,113,197,461,1493,1801,9533,15661,16741, 33181,39581,50593,180797,183089,1561829,1637813, 2243909,4468889,4874717,7856441,10087201,12021029, 12213913,18226661,148363637,292182097,320262253, 468213937] |