A136914 Numbers k such that k and k^2 use only the digits 0, 2, 5, 6 and 9.

0, 5, 25, 50, 95, 225, 250, 255, 500, 505, 950, 995, 2250, 2500, 2550, 5000, 5005, 5025, 5050, 5095, 9500, 9605, 9950, 9995, 22500, 22925, 25000, 25005, 25025, 25500, 25505, 50000, 50005, 50025, 50050, 50095, 50225, 50250, 50255, 50500, 50655, 50950, 95000, 95005, 96050, 96225, 96255, 96265, 99500, 99525, 99950, 99995, 225000, 229250, 250000

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..1345

J. Wellons, Tables of Shared Digits [archived]

Example

50956906265^2 = 2596606296099996250225.

Mathematica

With[{c={0, 2, 5, 6, 9}}, Select[FromDigits/@Tuples[c, 6], SubsetQ[c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, Aug 04 2022 *)

Crossrefs

Sequence in context: A074493 A262760 A290700 * A136913 A136911 A101654

Adjacent sequences: A136911 A136912 A136913 * A136915 A136916 A136917

Keyword

base,nonn

Author

Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008

Status

approved