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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 7 |
| 4 | 8 |
| 5 | 133 |
| 6 | 16 |
| 7 | 3221 |
| 8 | 3392 |
| 9 | 100391 |
| 10 | 20848 |
| 11 | 163287 |
| 12 | 7567072 |
| 13 | 10605587147 |
| 14 | 1551804656 |
| 15 | 1732332761353 |
| 16 | 252492267136 |
| 17 | 2313623814645529 |
| 18 | 261522788700176 |
| 19 | 69661896931499841923 |
| 20 | 2828470111061381408 |
| 21 | 23101294621895391907711 |
| 22 | 2128055943326564678576 |
| 23 | 3012597206020256660646816301 |
[0,2,7,8,133,16,3221,3392,100391,20848,163287, 7567072,10605587147,1551804656,1732332761353, 252492267136,2313623814645529,261522788700176, 69661896931499841923,2828470111061381408, 23101294621895391907711,2128055943326564678576, 3012597206020256660646816301] |