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A025741
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Index of 10^n within sequence of numbers of form 3^i*10^j.
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1
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1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 145, 171, 199, 229, 261, 295, 331, 369, 409, 451, 496, 543, 592, 643, 696, 751, 808, 867, 928, 991, 1056, 1124, 1194, 1266, 1340, 1416, 1494, 1574, 1656, 1740, 1826, 1915, 2006, 2099, 2194, 2291, 2390, 2491, 2594, 2699
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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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,easy
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AUTHOR
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STATUS
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approved
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