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(问候来自百科全书行上的整数序列!)

A047945号简单的桌子

n a(n)
0 1
1 10
2 2530
250025500
4 2500000025005000
5 25000000000250000500000
6 250000000002500000000
7 25000000000000000250000000005000000000000

[1,102530250025500250000002500005000,
 2500000000025000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

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上次修改日期:美国东部时间2020年8月13日02:09。包含336441个序列。(运行在oeis4上。)