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| n | a(n) |
|---|---|
| 0 | -3 |
| 1 | 10 |
| 2 | -33 |
| 3 | 114 |
| 4 | -403 |
| 5 | 1450 |
| 6 | -5281 |
| 7 | 19394 |
| 8 | -71619 |
| 9 | 265450 |
| 10 | -986241 |
| 11 | 3670002 |
| 12 | -13670803 |
| 13 | 50957770 |
| 14 | -190026433 |
| 15 | 708824834 |
| 16 | -2644492803 |
| 17 | 9867263050 |
| 18 | -36820012641 |
| 19 | 137401810674 |
| 20 | -512760729619 |
| 21 | 1913577130090 |
| 22 | -7141393334881 |
| 23 | 26651623320002 |
| 24 | -99464199710403 |
[-3,10,-33,114,-403,1450,-5281,19394,-71619, 265450,-986241,3670002,-13670803,50957770, -190026433,708824834,-2644492803,9867263050, -36820012641,137401810674,-512760729619, 1913577130090,-7141393334881,26651623320002, -99464199710403] |