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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 401 |
| 2 | 161201 |
| 3 | 64802401 |
| 4 | 26050404001 |
| 5 | 10472197606001 |
| 6 | 4209797387208401 |
| 7 | 1692328077460171201 |
| 8 | 680311677341601614401 |
| 9 | 273483601963246388818001 |
| 10 | 109939727677547706703222001 |
| 11 | 44195497042772214848306426401 |
| 12 | 17766479871466752821312480191201 |
| 13 | 7142080712832591861952768730436401 |
[1,401,161201,64802401,26050404001,10472197606001, 4209797387208401,1692328077460171201, 680311677341601614401,273483601963246388818001, 109939727677547706703222001, 44195497042772214848306426401, 17766479871466752821312480191201, 7142080712832591861952768730436401] |