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A116444 Numbers n which when sandwiched between two 9's give a multiple of n. +0
9
1, 3, 9, 11, 13, 21, 33, 39, 63, 77, 91, 99, 137, 219, 411, 657, 9091, 29703, 89109, 909091, 5882353, 10989011, 12145749, 12987013, 14354067, 20979021, 22556391, 32967033, 36437247, 38961039, 43062201, 52631579, 62937063, 67669173 (list; graph; listen)
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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.


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