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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 36 |
| 3 | 99 |
| 4 | 476 |
| 5 | 1693 |
| 6 | 7504 |
| 7 | 29221 |
| 8 | 123242 |
| 9 | 492076 |
| 10 | 2021436 |
| 11 | 8111306 |
| 12 | 32877666 |
| 13 | 131905733 |
| 14 | 531080990 |
| 15 | 2128576994 |
| 16 | 8541648896 |
| 17 | 34206851593 |
| 18 | 137042168870 |
| 19 | 548526597108 |
| 20 | 2195788650322 |
| 21 | 8786230110165 |
| 22 | 35158099104398 |
| 23 | 140658315422311 |
[7,36,99,476,1693,7504,29221,123242,492076, 2021436,8111306,32877666,131905733,531080990, 2128576994,8541648896,34206851593,137042168870, 548526597108,2195788650322,8786230110165, 35158099104398,140658315422311] |