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A116308 Numbers k such that k*(k+2) is the concatenation of two numbers m and m+3. 5
452, 547, 690, 855, 4381, 5618, 72729, 346532, 653467, 9090907, 94117645, 334665332, 336032386, 378253327, 390977441, 439928490, 483516485, 516483514, 560071509, 609022558, 621746672, 663967613, 665334667 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..23.

CROSSREFS

Cf. A116177, A116295, A116307, A116309, A116315.

Sequence in context: A224560 A224568 A224561 * A183636 A222823 A205209

Adjacent sequences:  A116305 A116306 A116307 * A116309 A116310 A116311

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified August 4 13:04 EDT 2021. Contains 346447 sequences. (Running on oeis4.)