The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 40 |
| 2 | 1100 |
| 3 | 7330 |
| 4 | 25540 |
| 5 | 65930 |
| 6 | 136200 |
| 7 | 263010 |
| 8 | 458410 |
| 9 | 740550 |
| 10 | 1142740 |
| 11 | 1681640 |
| 12 | 2400970 |
| 13 | 3338850 |
| 14 | 4495510 |
| 15 | 5962220 |
| 16 | 7736150 |
| 17 | 9924580 |
| 18 | 12442880 |
| 19 | 15527670 |
| 20 | 19132140 |
| 21 | 23301600 |
| 22 | 28070620 |
| 23 | 33585800 |
| 24 | 39919140 |
| 25 | 47157510 |
| 26 | 55209750 |
| 27 | 64185300 |
| 28 | 74311940 |
| 29 | 85731780 |
| 30 | 98167130 |
[40,1100,7330,25540,65930,136200,263010,458410, 740550,1142740,1681640,2400970,3338850,4495510, 5962220,7736150,9924580,12442880,15527670, 19132140,23301600,28070620,33585800,39919140, 47157510,55209750,64185300,74311940,85731780, 98167130] |