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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 11 |
| 3 | 45 |
| 4 | 182 |
| 5 | 731 |
| 6 | 2925 |
| 7 | 11702 |
| 8 | 46811 |
| 9 | 187245 |
| 10 | 748982 |
| 11 | 2995931 |
| 12 | 11983725 |
| 13 | 47934902 |
| 14 | 191739611 |
| 15 | 766958445 |
| 16 | 3067833782 |
| 17 | 12271335131 |
| 18 | 49085340525 |
| 19 | 196341362102 |
| 20 | 785365448411 |
| 21 | 3141461793645 |
| 22 | 12565847174582 |
| 23 | 50263388698331 |
[2,11,45,182,731,2925,11702,46811,187245,748982, 2995931,11983725,47934902,191739611,766958445, 3067833782,12271335131,49085340525,196341362102, 785365448411,3141461793645,12565847174582, 50263388698331] |