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A271115 as a simple table

na(n)
11
250049
3410924801
4491565199
54035971329551
633137139500710799
739640013290309201
8325462334331581751249
92672192117918839703333201
103196586448455823020136799
1126245412174507812354285027551
12215486635921438132237851754543199

[1,50049,410924801,491565199,4035971329551,
 33137139500710799,39640013290309201,
 325462334331581751249,2672192117918839703333201,
 3196586448455823020136799,
 26245412174507812354285027551,
 215486635921438132237851754543199]