The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 653 |
| 7 | 1542 |
| 8 | 2035 |
| 9 | 2460 |
| 10 | 7473 |
| 11 | 654 |
| 12 | 7394 |
| 13 | 7479 |
| 14 | 69698 |
| 15 | 4646 |
| 16 | 25205 |
| 17 | 122774 |
| 18 | 42953 |
| 19 | 444644 |
| 20 | 38761 |
| 21 | 545933 |
| 22 | 83675 |
| 23 | 212892 |
| 24 | 87123 |
| 25 | 106714 |
| 26 | 50427 |
| 27 | 747235 |
| 28 | 1737780 |
| 29 | 2371271 |
| 30 | 1807313 |
[0,0,0,0,0,653,1542,2035,2460,7473,654,7394,7479, 69698,4646,25205,122774,42953,444644,38761,545933, 83675,212892,87123,106714,50427,747235,1737780, 2371271,1807313] |