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A025708
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Index of 5^n within sequence of numbers of form 5^i*7^j.
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3
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1, 2, 4, 7, 11, 16, 21, 27, 34, 42, 51, 61, 71, 82, 94, 107, 121, 136, 151, 167, 184, 202, 221, 241, 261, 282, 304, 327, 351, 375, 400, 426, 453, 481, 510, 539, 569, 600, 632, 665, 699, 733, 768, 804, 841, 879, 918, 957, 997, 1038, 1080, 1123, 1167, 1211, 1256, 1302
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listen;
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internal format)
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OFFSET
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0,2
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LINKS
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PROG
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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