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| n | a(n) |
|---|---|
| 1 | 2137 |
| 2 | 2892 |
| 3 | 6369 |
| 4 | 12217 |
| 5 | 21964 |
| 6 | 28233 |
| 7 | 42312 |
| 8 | 4978977 |
| 9 | 9571608 |
| 10 | 18642249 |
| 11 | 32288908 |
| 12 | 96039609 |
| 13 | 200037461217 |
| 14 | 305526508312 |
| 15 | 570666416233 |
| 16 | 638912248204 |
| 17 | 996003996009 |
| 18 | 1846991026584 |
| 19 | 3251664327537 |
| 20 | 4859838227992 |
[2137,2892,6369,12217,21964,28233,42312,4978977, 9571608,18642249,32288908,96039609,200037461217, 305526508312,570666416233,638912248204, 996003996009,1846991026584,3251664327537, 4859838227992] |