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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 5 |
| 2 | 85 |
| 3 | 1115 |
| 4 | 13345 |
| 5 | 153275 |
| 6 | 1724905 |
| 7 | 19207235 |
| 8 | 212679265 |
| 9 | 2347869995 |
| 10 | 25876958425 |
| 11 | 284948873555 |
| 12 | 3136251594385 |
| 13 | 34509651449915 |
| 14 | 379671469419145 |
| 15 | 4176777984431075 |
| 16 | 45946908753664705 |
| 17 | 505430101839849035 |
| 18 | 5559815753535563065 |
| 19 | 61158481088674535795 |
[0,5,85,1115,13345,153275,1724905,19207235, 212679265,2347869995,25876958425,284948873555, 3136251594385,34509651449915,379671469419145, 4176777984431075,45946908753664705, 505430101839849035,5559815753535563065, 61158481088674535795] |