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A079036 Squares of these numbers have all their digits occurring in groups of 2 or more, without ending in zero. 3
88, 74162, 105462, 2973962, 31500088, 2366406812, 4715270688, 21186201038, 81445482588, 94245717262, 94277380462, 814454814312, 878141979162, 2579792842738, 3339943529162, 5744665119912, 10490710229162, 10546200105462, 10950910657262, 23577201339312 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A larger example is given by 939269775530142412^2 = 882227711224444113355445577001177744. The sequence is infinite, since it contains the numbers (10^k+1)*74162 and (10^k+1)*105462 for any k>=13. - Giovanni Resta, Sep 20 2006

LINKS

Giovanni Resta, Table of n, a(n) for n = 1..76 (terms < 10^19)

Frank Rubin, Repeated Digits.

EXAMPLE

a(2) = 74162 because 74162^2 = 5500002244 consists of a group of 2 5's, followed by a group of 4 0's, then 2 2's and finally 2 4's.

CROSSREFS

Cf. A079035, A033023.

Sequence in context: A157460 A267917 A093244 * A159420 A093222 A114922

Adjacent sequences:  A079033 A079034 A079035 * A079037 A079038 A079039

KEYWORD

nonn,base

AUTHOR

Sudipta Das (juitech(AT)vsnl.net), Feb 01 2003

EXTENSIONS

More terms from Giovanni Resta, Sep 20 2006

More terms from Giovanni Resta, Sep 06 2018

STATUS

approved

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Last modified January 24 13:11 EST 2022. Contains 350538 sequences. (Running on oeis4.)