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A116125
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Numbers n such that n concatenated with n-5 gives the product of two numbers which differ by 6.
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9
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7, 97, 205, 300, 477, 732, 997, 1920, 3157, 9997, 52896, 99997, 120085, 427020, 999997, 8264460, 9999997, 88581312, 99999997, 112000885, 112917765, 143075580, 152863360, 193537077, 233788192, 266755221, 313680096
(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 itself gives the product of two numbers which differ by 4.
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EXAMPLE
| 6786111717//6786111712 = 8237785936 * 8237785942, where // denotes concatenation.
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CROSSREFS
| Cf. A115426, A116124, A116126, A116131, A116256.
Cf. A116130, A116158, A115428, A116288.
Sequence in context: A054932 A177879 A090687 * A142315 A116288 A116261
Adjacent sequences: A116122 A116123 A116124 * A116126 A116127 A116128
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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 15 2007
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