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| n | a(n) |
|---|---|
| 1 | 123448 |
| 2 | 279743 |
| 3 | 642050 |
| 4 | 1704423 |
| 5 | 3486340 |
| 6 | 8213023 |
| 7 | 18851978 |
| 8 | 39885980 |
| 9 | 88807962 |
| 10 | 188663823 |
| 11 | 363746046 |
| 12 | 694144469 |
| 13 | 1276646676 |
| 14 | 2283974672 |
| 15 | 4049460972 |
| 16 | 7107577621 |
| 17 | 12343610434 |
| 18 | 21428240289 |
| 19 | 37208805784 |
| 20 | 64771809982 |
| 21 | 113539444616 |
[123448,279743,642050,1704423,3486340,8213023, 18851978,39885980,88807962,188663823,363746046, 694144469,1276646676,2283974672,4049460972, 7107577621,12343610434,21428240289,37208805784, 64771809982,113539444616] |