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A226828
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Numbers of the form 4^j + 9^k, for j and k >= 0.
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1
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2, 5, 10, 13, 17, 25, 65, 73, 82, 85, 97, 145, 257, 265, 337, 730, 733, 745, 793, 985, 1025, 1033, 1105, 1753, 4097, 4105, 4177, 4825, 6562, 6565, 6577, 6625, 6817, 7585, 10657, 16385, 16393, 16465, 17113, 22945, 59050, 59053, 59065, 59113, 59305, 60073, 63145
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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a = 4; b = 9; mx = 70000; Union[Flatten[Table[a^n + b^m, {m, 0, Log[b, mx]}, {n, 0, Log[a, mx - b^m]}]]]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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