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A116099
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Numbers n such that n concatenated with n-9 gives the product of two numbers which differ by 7.
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15
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69, 59898667, 79493157, 13412927190959690154913903, 14163000698458955079906403, 38895475965785687555173929, 40165600438484442828161229, 74294440818366638194239027
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Also numbers n such that n concatenated with n-3 gives the product of two numbers which differ by 5.
Also numbers n such that n concatenated with n+1 gives the product of two numbers which differ by 3.
Also numbers n such that n concatenated with n+3 gives the product of two numbers which differ by 1.
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EXAMPLE
| 79493157//79493154 = 89158933 * 89158938, where // denotes concatenation.
79493157//79493158 = 89158934 * 89158937.
79493157//79493160 = 89158935 * 89158936.
79493157//79493148 = 89158932 * 89158939.
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CROSSREFS
| Cf. A116098, A116193, A116107, A116230, A116130, A116136, A116205, A116107, A116268.
Cf. A115426, A115428, A116171, A116296, A116170, A116177, A116307.
Sequence in context: A049000 A194612 A175049 * A116238 A136114 A075405
Adjacent sequences: A116096 A116097 A116098 * A116100 A116101 A116102
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KEYWORD
| nonn,base
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AUTHOR
| Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 06 2006
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EXTENSIONS
| Edited by N. J. A. Sloane (njas(AT)research.att.com), Apr 12 2007
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