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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 5 |
| 2 | 23 |
| 3 | 51 |
| 4 | 443 |
| 5 | 949 |
| 6 | 4027 |
| 7 | 8483 |
| 8 | 142163 |
| 9 | 296481 |
| 10 | 1232113 |
| 11 | 2552405 |
| 12 | 21095279 |
| 13 | 43490633 |
| 14 | 178977107 |
| 15 | 367649059 |
| 16 | 12065310083 |
| 17 | 24714021721 |
| 18 | 101124870709 |
| 19 | 206667899393 |
| 20 | 1687804827349 |
| 21 | 3442891889003 |
| 22 | 14034579926477 |
| 23 | 28583749273429 |
[2,5,23,51,443,949,4027,8483,142163,296481, 1232113,2552405,21095279,43490633,178977107, 367649059,12065310083,24714021721,101124870709, 206667899393,1687804827349,3442891889003, 14034579926477,28583749273429] |