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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 24 |
| 4 | 98 |
| 5 | 430 |
| 6 | 2062 |
| 7 | 10610 |
| 8 | 58240 |
| 9 | 338984 |
| 10 | 2081189 |
| 11 | 13423258 |
| 12 | 90626012 |
| 13 | 638509008 |
| 14 | 4682120763 |
| 15 | 35650040782 |
| 16 | 281266115870 |
| 17 | 2295142774336 |
| 18 | 19338107378888 |
| 19 | 167987656339604 |
| 20 | 1502475101768767 |
| 21 | 13818574571596432 |
| 22 | 130542011977462175 |
| 23 | 1265358001625542030 |
| 24 | 12572822521590475349 |
| 25 | 127943980062492526520 |
| 26 | 1332336499429857507073 |
| 27 | 14186629118985647254622 |
| 28 | 154348478009342665050329 |
| 29 | 1714707987491310848285920 |
[1,2,7,24,98,430,2062,10610,58240,338984,2081189, 13423258,90626012,638509008,4682120763, 35650040782,281266115870,2295142774336, 19338107378888,167987656339604,1502475101768767, 13818574571596432,130542011977462175, 1265358001625542030,12572822521590475349, 127943980062492526520,1332336499429857507073, 14186629118985647254622,154348478009342665050329, 1714707987491310848285920] |