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A084013
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Smallest n-digit palindromic multiple of n. For n = 10k it is sufficient that the multiple is palindromic with leading zeros ignored. 0 if no such number exists.
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4
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1, 22, 111, 2112, 50005, 201102, 1002001, 21100112, 100070001, 1000000010, 10000200001, 400002200004, 1000029200001, 20000055000002, 500000020000005, 2110000000000112, 10000000200000001, 200000007700000002
(list; graph; refs; listen; history; internal format)
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