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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 35 |
| 5 | 577 |
| 6 | 5909 |
| 7 | 16331 |
| 8 | 2053379 |
| 9 | 42374099 |
| 10 | 987654203 |
| 11 | 2334368201 |
| 12 | 736867783013 |
| 13 | 23136292864661 |
| 14 | 789018236128979 |
| 15 | 1936265501684027 |
| 16 | 1147797409030816259 |
| 17 | 48471109094902544503 |
| 18 | 2178347851919531380901 |
| 19 | 5463472083532379956913 |
| 20 | 5228356786703601108032803 |
[0,0,0,35,577,5909,16331,2053379,42374099, 987654203,2334368201,736867783013,23136292864661, 789018236128979,1936265501684027, 1147797409030816259,48471109094902544503, 2178347851919531380901,5463472083532379956913, 5228356786703601108032803] |