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A116296
Numbers k such that k*(k+3) gives the concatenation of two numbers m and m+1.
5
82, 77394228, 89158934, 36623663376237623663376336, 37633762366336633762366236, 62366237633663366237633762, 63376336623762376336623662, 86194223018927804587702129
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..8.
EXAMPLE
89158934 * 89158937 = 79493157//79493158, where // denotes concatenation.
CROSSREFS
Cf.
A116099
,
A116287
,
A116295
,
A116297
,
A116302
.
Sequence in context:
A015077
A015040
A235982
*
A324674
A113890
A051327
Adjacent sequences:
A116293
A116294
A116295
*
A116297
A116298
A116299
KEYWORD
nonn
,
base
AUTHOR
Giovanni Resta
, Feb 06 2006
STATUS
approved
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Last modified April 17 17:01 EDT 2024. Contains 371765 sequences. (Running on oeis4.)