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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 4212 |
| 3 | 59626 |
| 4 | 1379512 |
| 5 | 26566266 |
| 6 | 544403948 |
| 7 | 10551803060 |
| 8 | 205336122417 |
| 9 | 3913347537410 |
| 10 | 74172957575993 |
| 11 | 1391260426025666 |
| 12 | 25942784963976735 |
| 13 | 480614597100202422 |
| 14 | 8860662840757232528 |
| 15 | 162602761260788194310 |
[0,4212,59626,1379512,26566266,544403948, 10551803060,205336122417,3913347537410, 74172957575993,1391260426025666,25942784963976735, 480614597100202422,8860662840757232528, 162602761260788194310] |