A136920 Numbers k such that k and k^2 use only the digits 0, 2, 5 and 9.

0, 5, 50, 95, 500, 505, 950, 995, 5000, 5005, 5050, 5095, 9500, 9950, 9995, 50000, 50005, 50050, 50095, 50500, 50950, 95000, 95005, 99500, 99950, 99995, 500000, 500005, 500050, 500095, 500500, 500505, 500950, 500995, 502005, 505000, 509500, 950000, 950005, 950050, 995000, 999500, 999950, 999995, 5000000, 5000005, 5000050, 5000095, 5000500

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..1172

J. Wellons, Tables of Shared Digits [archived]

Example

95005050000095^2 = 9025959525520550959500009025.

Crossrefs

Sequence in context: A136916 A204193 A136919 * A358686 A274067 A069540

Adjacent sequences: A136917 A136918 A136919 * A136921 A136922 A136923

Keyword

base,nonn

Author

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

Status

approved