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| n | a(n) |
|---|---|
| 1 | 10 |
| 2 | 42 |
| 3 | 70 |
| 4 | 330 |
| 5 | 462 |
| 6 | 770 |
| 7 | 2730 |
| 8 | 4290 |
| 9 | 6006 |
| 10 | 10010 |
| 11 | 39270 |
| 12 | 46410 |
| 13 | 72930 |
| 14 | 102102 |
| 15 | 170170 |
| 16 | 570570 |
| 17 | 746130 |
| 18 | 881790 |
| 19 | 1385670 |
| 20 | 1939938 |
| 21 | 3233230 |
| 22 | 11741730 |
| 23 | 13123110 |
| 24 | 17160990 |
| 25 | 20281170 |
| 26 | 31870410 |
| 27 | 44618574 |
| 28 | 74364290 |
| 29 | 281291010 |
| 30 | 340510170 |
| 31 | 380570190 |
| 32 | 497668710 |
| 33 | 588153930 |
[10,42,70,330,462,770,2730,4290,6006,10010,39270, 46410,72930,102102,170170,570570,746130,881790, 1385670,1939938,3233230,11741730,13123110, 17160990,20281170,31870410,44618574,74364290, 281291010,340510170,380570190,497668710,588153930] |