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A369191 as a simple table
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 34 |
| 5 | 387 |
| 6 | 5686 |
| 7 | 102084 |
| 8 | 2162168 |
| 9 | 52693975 |
| 10 | 1450876804 |
| 11 | 44509105965 |
| 12 | 1504709144203 |
| 13 | 55563209785167 |
| 14 | 2224667253972242 |
| 15 | 95984473918245388 |
| 16 | 4439157388017620554 |
| 17 | 219067678811211857307 |
| 18 | 11489425098298623161164 |
| 19 | 638159082104453330569185 |
[1,0,1,4,34,387,5686,102084,2162168,52693975, 1450876804,44509105965,1504709144203, 55563209785167,2224667253972242,95984473918245388, 4439157388017620554,219067678811211857307, 11489425098298623161164,638159082104453330569185] |