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A048539
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a(n)*(a(n)+1) is smallest pronic number containing exactly n 5's.
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1
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7, 23, 74, 2248, 2292, 23506, 50552, 742667, 2357022, 22706949, 74555050, 703955648, 745020507, 3996943276, 74333434976, 244040827632
(list; graph; refs; listen; history; internal format)
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