The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 1 |
| 15 | 0 |
| 16 | 1 |
| 17 | 0 |
| 18 | 5 |
| 19 | 0 |
| 20 | 32 |
| 21 | 0 |
| 22 | 385 |
| 23 | 0 |
| 24 | 7573 |
| 25 | 0 |
| 26 | 181225 |
| 27 | 0 |
| 28 | 4624481 |
| 29 | 0 |
| 30 | 122090002 |
| 31 | 0 |
| 32 | 3328899605 |
| 33 | 0 |
| 34 | 93988911027 |
| 35 | 25 |
| 36 | 2754128020324 |
| 37 | 13504 |
[0,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,1,0,5,0,32,0,385, 0,7573,0,181225,0,4624481,0,122090002,0, 3328899605,0,93988911027,25,2754128020324,13504] |