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A226827
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Numbers of the form 3^j + 9^k, for j and k >= 0.
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2
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2, 4, 10, 12, 18, 28, 36, 82, 84, 90, 108, 162, 244, 252, 324, 730, 732, 738, 756, 810, 972, 1458, 2188, 2196, 2268, 2916, 6562, 6564, 6570, 6588, 6642, 6804, 7290, 8748, 13122, 19684, 19692, 19764, 20412, 26244, 59050, 59052, 59058, 59076, 59130, 59292, 59778
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OFFSET
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1,1
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COMMENTS
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If every number 3^j + 9^k is considered, then there are duplicates of 10, 82, 90, 730, 738, 810, 6562, 6570, 6642, 7290, 59050, 59058, 59130, 59778, 65610,....
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LINKS
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MATHEMATICA
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a = 3; b = 9; mx = 60000; 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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