login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A137114 Numbers k such that k and k^2 use only the digits 2, 5, 6, 8 and 9. 1
5, 25, 925, 2585, 2925, 22925, 25665, 25865, 28685, 28686, 228685, 256565, 258565, 828665, 925525, 925665, 926565, 962585, 2286685, 2299686, 2925525, 2926925, 9266565, 22866685, 22866925, 22925865, 22955585, 22955665, 25662585, 28686685, 29266925, 29296585, 29825865, 29882585, 29926565, 82882585, 92566565, 92895565, 96259685 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Generated with DrScheme.

LINKS

Jonathan Wellons, Table of n, a(n) for n = 1..230

J. Wellons, Tables of Shared Digits

EXAMPLE

829629856598686^2 = 688285698959956296296856926596.

MATHEMATICA

Module[{c={2, 5, 6, 8, 9}}, Table[Select[FromDigits/@Tuples[c, n], SubsetQ[ c, IntegerDigits[#^2]]&], {n, 8}]]//Flatten (* Harvey P. Dale, Oct 21 2016 *)

CROSSREFS

Sequence in context: A274463 A279835 A169652 * A067212 A061583 A278120

Adjacent sequences:  A137111 A137112 A137113 * A137115 A137116 A137117

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 3 11:47 EDT 2021. Contains 346435 sequences. (Running on oeis4.)