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A116261 Numbers k such that k*(k+5) gives the concatenation of two numbers m and m-4. 5
7, 97, 766, 857, 909, 997, 3284, 6712, 9997, 45451, 54545, 99997, 990099, 999997, 8181818, 9999997, 70588232, 99999997, 343130553, 362637362, 363636360, 420053630, 421052631, 497975708, 502024288, 578947365, 579946366 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..27.

CROSSREFS

Cf. A028557, A116130, A116255, A116260, A116262, A116268.

Sequence in context: A142315 A116288 A219088 * A289851 A242377 A178005

Adjacent sequences:  A116258 A116259 A116260 * A116262 A116263 A116264

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified July 2 06:01 EDT 2022. Contains 354985 sequences. (Running on oeis4.)