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A116141 Numbers n such that n concatenated with n-2 gives the product of two numbers which differ by 1. 4
4, 5303944, 6677714, 2070936216988528558, 2969428172738875624, 6685545813563350444, 8013829604553736451395958429212, 9724110515510343256451213152382 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

6677714//6677712 = 8171728 * 8171729, where // denotes

concatenation.

CROSSREFS

Cf. A116134, A116142, A116154, A116272.

Sequence in context: A058424 A204041 A065248 * A067508 A034250 A058436

Adjacent sequences:  A116138 A116139 A116140 * A116142 A116143 A116144

KEYWORD

nonn,base

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 06 2006

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Last modified February 14 14:07 EST 2012. Contains 205623 sequences.