A116308 Numbers k such that k*(k+2) is the concatenation of two numbers m and m+3.

452, 547, 690, 855, 4381, 5618, 72729, 346532, 653467, 9090907, 94117645, 334665332, 336032386, 378253327, 390977441, 439928490, 483516485, 516483514, 560071509, 609022558, 621746672, 663967613, 665334667

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