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A120433
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Numbers n with property that Roman numeral for n uses the subtractive notation.
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1
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4, 9, 14, 19, 24, 29, 34, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 54, 59, 64, 69, 74, 79, 84, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 104, 109, 114, 119, 124, 129, 134, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 154, 159, 164, 169, 174
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Nathaniel Johnston, Table of n, a(n) for n = 1..1952 (complete up to 3999)
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MAPLE
| with(StringTools): for n from 1 to 300 do r:=convert(n, roman): if(Search("IV", r)>0 or Search("IX", r)>0 or Search("XL", r)>0 or Search("XC", r)>0 or Search("CD", r)>0 or Search("CM", r)>0)then printf("%d, ", n): fi: od: # Nathaniel Johnston, May 18 2011
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CROSSREFS
| Sequence in context: A131280 A197878 A190086 * A172324 A016897 A189517
Adjacent sequences: A120430 A120431 A120432 * A120434 A120435 A120436
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KEYWORD
| base,easy,nonn
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AUTHOR
| Christian Amet (chr.amet(AT)infonie.fr), Jul 13 2006
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