The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 730 |
| 1 | 8002 |
| 2 | 60754 |
| 3 | 381490 |
| 4 | 2146930 |
| 5 | 11252722 |
| 6 | 56133874 |
| 7 | 270161650 |
| 8 | 1265842930 |
| 9 | 5810393842 |
| 10 | 26243850994 |
| 11 | 117016314610 |
| 12 | 516299391730 |
| 13 | 2258288837362 |
| 14 | 9805857424114 |
| 15 | 42314967024370 |
| 16 | 181627585561330 |
| 17 | 775984568599282 |
| 18 | 3301842333205234 |
[730,8002,60754,381490,2146930,11252722,56133874, 270161650,1265842930,5810393842,26243850994, 117016314610,516299391730,2258288837362, 9805857424114,42314967024370,181627585561330, 775984568599282,3301842333205234] |