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A116193
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Numbers n such that n concatenated with n+5 gives the product of two numbers which differ by 5.
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11
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11, 45, 18281, 32769, 56891, 180689, 330539, 959481, 1850201, 3247409, 4940219, 2425563239, 2575561739, 6003563495, 7245212645, 7770160145, 4983798265289, 5049762270381, 5534298528989, 5603798594169, 21894082450101
(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+9 gives the product of two numbers which differ by 3. For proof that this is the same sequence compare A116133.
Also numbers n such that n concatenated with n-9 gives the product of two numbers which differ by 9.
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EXAMPLE
| 7770160145//7770160136 = 8814851183 * 8814851192, where // denotes concatenation.
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CROSSREFS
| Cf. A116205, A116187, A116349.
Cf. A116179, A115430, A116194, A116200, A116324.
Cf. A116099, A116109, A116231.
Sequence in context: A144932 A072262 A110114 * A063158 A081587 A143059
Adjacent sequences: A116190 A116191 A116192 * A116194 A116195 A116196
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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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