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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 11 |
| 4 | 134 |
| 5 | 145 |
| 6 | 859 |
| 7 | 1004 |
| 8 | 1863 |
| 9 | 4730 |
| 10 | 16053 |
| 11 | 20783 |
| 12 | 390147 |
| 13 | 410930 |
| 14 | 1622937 |
| 15 | 3656804 |
| 16 | 5279741 |
| 17 | 8936545 |
| 18 | 49962466 |
| 19 | 58899011 |
| 20 | 756750598 |
| 21 | 3842652001 |
| 22 | 4599402599 |
| 23 | 8442054600 |
| 24 | 325397477399 |
| 25 | 333839531999 |
| 26 | 659237009398 |
| 27 | 3630024578989 |
| 28 | 44219531957266 |
[1,1,2,11,134,145,859,1004,1863,4730,16053,20783, 390147,410930,1622937,3656804,5279741,8936545, 49962466,58899011,756750598,3842652001,4599402599, 8442054600,325397477399,333839531999,659237009398, 3630024578989,44219531957266] |