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A116205
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Numbers n such that n concatenated with n+7 gives the product of two numbers which differ by 3.
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11
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1, 81, 1353, 3997, 7723, 23761, 26271, 76771, 1415683, 3890571, 8495497, 1066870443, 1239366513, 4198438981, 4534273891, 6502317141, 6918679731, 2199164200036329043, 2820114781174460091, 5500888421709400741
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Also numbers n such that n concatenated with n+9 gives the product of two numbers which differ by 1.
Also numbers n such that n concatenated with n-3 gives the product of two numbers which differ by 7.
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CROSSREFS
| Cf. A116172, A115429, A116173, A116193, A116336.
Cf. A116132, A116099, A116139, A116152, A116269, A116348.
Sequence in context: A183807 A016768 A059977 * A110921 A203650 A096302
Adjacent sequences: A116202 A116203 A116204 * A116206 A116207 A116208
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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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