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A349677
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Numbers k such that 3 * reversal(k) + 1 = k.
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0
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742, 7425742, 783742162, 74257425742, 7421625783742, 7837425742162, 742574257425742, 783783742162162, 74216257425783742, 74257837421625742, 78374257425742162, 7421621625783783742, 7425742574257425742, 7837421625783742162, 7837837425742162162
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OFFSET
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1,1
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COMMENTS
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It seems that this sequence consists of all numbers A that can be generated (recursively) by the following procedure: A -> 742 | 742B742 | 783A162 and B -> 5 | 162B783 | 5A5.
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LINKS
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FORMULA
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k = 3*reversal(k) + 1.
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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