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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 6 |
| 3 | 34 |
| 4 | 190 |
| 5 | 1059 |
| 6 | 5908 |
| 7 | 33028 |
| 8 | 185076 |
| 9 | 1039525 |
| 10 | 5851626 |
| 11 | 33006438 |
| 12 | 186519138 |
| 13 | 1055789511 |
| 14 | 5985405000 |
| 15 | 33979107336 |
| 16 | 193143097288 |
[0,1,6,34,190,1059,5908,33028,185076,1039525, 5851626,33006438,186519138,1055789511,5985405000, 33979107336,193143097288] |