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| n | a(n) |
|---|---|
| 0 | 21 |
| 1 | 22 |
| 2 | 175 |
| 3 | 197 |
| 4 | 766 |
| 5 | 1729 |
| 6 | 37075 |
| 7 | 75879 |
| 8 | 264712 |
| 9 | 340591 |
| 10 | 2648849 |
| 11 | 2989440 |
| 12 | 128205329 |
| 13 | 131194769 |
| 14 | 1046568712 |
| 15 | 1177763481 |
| 16 | 4579859155 |
| 17 | 10337481791 |
| 18 | 221666976766 |
| 19 | 453671435323 |
| 20 | 1582681282735 |
| 21 | 2036352718058 |
[21,22,175,197,766,1729,37075,75879,264712,340591, 2648849,2989440,128205329,131194769,1046568712, 1177763481,4579859155,10337481791,221666976766, 453671435323,1582681282735,2036352718058] |