| n | a(n) |
|---|---|
| 0 | 10 |
| 1 | 5 |
| 2 | 6 |
| 3 | 10 |
| 4 | 20 |
| 5 | 45 |
| 6 | 110 |
| 7 | 286 |
| 8 | 780 |
| 9 | 2210 |
| 10 | 6460 |
| 11 | 19380 |
| 12 | 59432 |
| 13 | 185725 |
| 14 | 589950 |
| 15 | 1900950 |
| 16 | 6203100 |
| 17 | 20470230 |
| 18 | 68234100 |
| 19 | 229514700 |
| 20 | 778354200 |
| 21 | 2659376850 |
| 22 | 9148256364 |
| 23 | 31667041260 |
| 24 | 110248217720 |
| 25 | 385868762020 |
| 26 | 1357193576760 |
| 27 | 4795417304552 |
| 28 | 17015996887120 |
| 29 | 60619488910365 |
[10,5,6,10,20,45,110,286,780,2210,6460,19380, 59432,185725,589950,1900950,6203100,20470230, 68234100,229514700,778354200,2659376850, 9148256364,31667041260,110248217720,385868762020, 1357193576760,4795417304552,17015996887120, 60619488910365] |