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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 11 |
| 3 | 43 |
| 4 | 183 |
| 5 | 804 |
| 6 | 3593 |
| 7 | 16403 |
| 8 | 75914 |
| 9 | 354170 |
| 10 | 1665099 |
| 11 | 7885983 |
| 12 | 37532516 |
| 13 | 179316553 |
| 14 | 860227887 |
| 15 | 4140471444 |
| 16 | 19977956382 |
| 17 | 96628135136 |
| 18 | 468432058624 |
| 19 | 2274938810486 |
| 20 | 11065752663237 |
| 21 | 53910840100157 |
| 22 | 263005760557395 |
| 23 | 1284565970851187 |
| 24 | 6281059887543450 |
| 25 | 30744235672382452 |
| 26 | 150621365818561127 |
[1,3,11,43,183,804,3593,16403,75914,354170, 1665099,7885983,37532516,179316553,860227887, 4140471444,19977956382,96628135136,468432058624, 2274938810486,11065752663237,53910840100157, 263005760557395,1284565970851187,6281059887543450, 30744235672382452,150621365818561127] |