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A116130
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Numbers n such that n concatenated with n-4 gives the product of two numbers which differ by 5.
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9
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8, 98, 590, 738, 830, 998, 1080, 4508, 9998, 20660, 29754, 99998, 980300, 999998, 6694218, 9999998, 49826988, 99999998, 117738578, 131505858, 132231404, 176445054, 177285320, 247979808, 252028388, 335180054, 336337790
(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 3.
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EXAMPLE
| 7531357568//7531357564 = 8678339452 * 8678339457, where // denotes concatenation.
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CROSSREFS
| Cf. A116124, A116129, A116131, A116099, A116261.
Cf. A116163, A116136, A116125, A116099, A116287.
Sequence in context: A116267 A183334 A196327 * A116287 A099150 A116229
Adjacent sequences: A116127 A116128 A116129 * A116131 A116132 A116133
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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 13 2007
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