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A116311 Numbers k such that k*(k+7) gives the concatenation of two numbers m and m+3. 5
8445, 8810, 69125298546226023971, 69855225553525294044, 74604750601020544519, 75334677608319814592, 92496418993920707746, 93226346001219977819, 97975871048715228294, 98705798056014498367 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

8810 * 8817 = 7767//7770, where // denotes concatenation.

CROSSREFS

Cf. A116180, A116298, A116310, A116312, A116319.

Sequence in context: A093221 A023321 A116258 * A116351 A253147 A046336

Adjacent sequences:  A116308 A116309 A116310 * A116312 A116313 A116314

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified July 31 13:25 EDT 2021. Contains 346373 sequences. (Running on oeis4.)