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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
CROSSREFS
Sequence in context: A224560 A224568 A224561 * A183636 A222823 A205209
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, Feb 06 2006
STATUS
approved

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Last modified June 12 15:32 EDT 2024. Contains 373331 sequences. (Running on oeis4.)