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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 7766 |
| 4 | 11220 |
| 5 | 408507 |
| 6 | 515251 |
| 7 | 8731041 |
| 8 | 10727508 |
| 9 | 117594686 |
| 10 | 143769813 |
| 11 | 1177370274 |
| 12 | 1444368904 |
| 13 | 9540744345 |
| 14 | 11777809890 |
| 15 | 65817281629 |
| 16 | 81839688513 |
| 17 | 399515775318 |
| 18 | 500416597406 |
| 19 | 2183502919917 |
| 20 | 2754197375292 |
| 21 | 10926841762815 |
| 22 | 13873107464241 |
| 23 | 50708154081123 |
[1,0,0,7766,11220,408507,515251,8731041,10727508, 117594686,143769813,1177370274,1444368904, 9540744345,11777809890,65817281629,81839688513, 399515775318,500416597406,2183502919917, 2754197375292,10926841762815,13873107464241, 50708154081123] |