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 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 9 |
| 10 | 10 |
| 11 | 22 |
| 12 | 36 |
| 13 | 65 |
| 14 | 98 |
| 15 | 165 |
| 16 | 240 |
| 17 | 374 |
| 18 | 540 |
| 19 | 779 |
| 20 | 1080 |
| 21 | 1533 |
| 22 | 2068 |
| 23 | 2829 |
| 24 | 3768 |
| 25 | 5025 |
| 26 | 6552 |
| 27 | 8586 |
| 28 | 11004 |
| 29 | 14152 |
| 30 | 17940 |
| 31 | 22692 |
| 32 | 28384 |
| 33 | 35508 |
| 34 | 43894 |
| 35 | 54215 |
| 36 | 66420 |
| 37 | 81178 |
| 38 | 98496 |
| 39 | 119340 |
| 40 | 143560 |
| 41 | 172446 |
| 42 | 205968 |
| 43 | 245444 |
| 44 | 291060 |
| 45 | 344565 |
[0,0,0,0,0,0,0,0,0,9,10,22,36,65,98,165,240,374, 540,779,1080,1533,2068,2829,3768,5025,6552,8586, 11004,14152,17940,22692,28384,35508,43894,54215, 66420,81178,98496,119340,143560,172446,205968, 245444,291060,344565] |