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| n | a(n) |
|---|---|
| 0 | 11 |
| 1 | 45 |
| 2 | 101 |
| 3 | 449 |
| 4 | 9979 |
| 5 | 40365 |
| 6 | 90709 |
| 7 | 403201 |
| 8 | 8961131 |
| 9 | 36247725 |
| 10 | 81456581 |
| 11 | 362074049 |
| 12 | 8047085659 |
| 13 | 32550416685 |
| 14 | 73147919029 |
| 15 | 325142092801 |
| 16 | 7226273960651 |
| 17 | 29230237935405 |
| 18 | 65686749831461 |
| 19 | 291977237261249 |
| 20 | 6489185969578939 |
| 21 | 26248721115577005 |
[11,45,101,449,9979,40365,90709,403201,8961131, 36247725,81456581,362074049,8047085659, 32550416685,73147919029,325142092801, 7226273960651,29230237935405,65686749831461, 291977237261249,6489185969578939, 26248721115577005] |