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A217416
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Numbers of the form 2^r*13^s whose decimal representations are such that each digit 0-9 appears a prime number of times.
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12
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OFFSET
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1,1
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COMMENTS
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See the formula section for more data, and the other sequences in cross-reference for similar and motivation.
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LINKS
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FORMULA
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EXAMPLE
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A217417(1)=10 and A217418(1)=20, so this sequence's first term can be simply written as 338^10 (338=2*13^2). It has two each of 0's, 1's, 5's, 6's, 7's and 8's; three each of 3's, 4's and 9's; and five 2's.
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CROSSREFS
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Cf. A217854, A217417, A217418, A217404, A217407, A217410, A217413, A217419, A217422, A217425, A217428, A217431.
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KEYWORD
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nonn,base,less
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AUTHOR
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STATUS
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approved
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