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A178714
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Smallest number whose Roman numeral representation shares no letters with the previous number in the sequence
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1
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1, 5, 2, 10, 3, 15, 50, 4, 20, 6, 30, 7, 40, 8, 60, 100, 9, 55, 11, 105, 12, 150, 13, 155, 19, 200, 14, 250, 16, 300, 17, 350, 18, 400, 21, 205, 22, 255, 23, 305, 29, 355, 31, 405, 32, 450, 24, 500, 25, 51, 35, 52, 90, 53, 95, 501, 45, 101, 65, 102, 70, 103, 75, 201, 80, 104
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OFFSET
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1,2
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COMMENTS
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A(1) is 1. A(n) is the smallest number not yet listed whose Roman numeral representation has no letters in common with the Roman numeral representation of A(n-1).
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LINKS
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EXAMPLE
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The first entry is 1 (Roman numeral I). The next entry is the smallest number that does not have "I" in its Roman numeral representation, which is 5 (Roman numeral V). The next entry is the smallest number that does not have "V" in its Roman numeral representation, which is 2 (Roman numeral II).
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CROSSREFS
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KEYWORD
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base,fini,nonn
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AUTHOR
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STATUS
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approved
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