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A116112
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Numbers n such that n concatenated with n-7 gives the product of two numbers which differ by 7.
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16
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17, 35, 10408517, 45884051, 62918301, 1116290522645838319925, 1491109615209578451401, 2254276950187476704727, 2758431647767103545151, 3768131911733856383477, 4434103687048263321737, 5230580700713956424051
(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-1 gives the product of two numbers which differ by 5.
Also numbers n such that n concatenated with n+3 gives the product of two numbers which differ by 3.
Also numbers n such that n concatenated with n+5 gives the product of two numbers which differ by 1.
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EXAMPLE
| 62918301//62918300 = 79321055 * 79321060, where // denotes concatenation.
62918301//62918304 = 79321056 * 79321059.
62918301//62918306 = 79321057 * 79321058.
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CROSSREFS
| Cf. A116107, A115426, A116113, A116119, A116243.
Cf. A116163, A115429, A116158, A116281.
Cf. A116171, A116177, A116179, A116185, A116309, A115430, A116322.
Sequence in context: A041574 A144534 A041576 * A190755 A098849 A177835
Adjacent sequences: A116109 A116110 A116111 * A116113 A116114 A116115
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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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