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A344183
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Lexicographically earliest sequence of positive integers such that for any n > 0, the decimal expansion of a(n) contains the decimal expansion of k for k = 1..n and the decimal expansion of a(n+1) is obtained by replacing a possibly empty substring of the decimal expansion of a(n) by the binary expansion of n+1.
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2
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1, 12, 123, 1234, 12345, 123456, 1234567, 12345678, 123456789, 1023456789, 11023456789, 110123456789, 1101213456789, 11012131456789, 110121314156789, 1101213141516789, 11012131415161789, 110121314151617189, 1101213141516171819, 11012013141516171819
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OFFSET
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1,2
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COMMENTS
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This sequence is a variant of A035239, easier to compute.
This sequence is not weakly increasing; a(107) < a(106).
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LINKS
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PROG
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(Perl) See Links section.
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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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STATUS
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approved
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