A079036 Squares of these numbers have all their digits occurring in groups of 2 or more, without ending in zero.

88, 74162, 105462, 2973962, 31500088, 2366406812, 4715270688, 21186201038, 81445482588, 94245717262, 94277380462, 814454814312, 878141979162, 2579792842738, 3339943529162, 5744665119912, 10490710229162, 10546200105462, 10950910657262, 23577201339312

Offset: 1

Author

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

Keywords

• nonn
• base

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

Examples

			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.
		

Links

• Giovanni Resta, Table of n, a(n) for n = 1..76 (terms < 10^19)
• Frank Rubin, Repeated Digits.

Crossrefs

Cf. A079035, A033023.

Extensions

More terms from Giovanni Resta, Sep 20 2006

More terms from Giovanni Resta, Sep 06 2018