A137096 Numbers k such that k and k^2 use only the digits 2, 4, 5, 6 and 9.

2, 5, 25, 65, 264, 665, 962, 964, 4925, 6665, 22262, 22925, 66665, 96242, 222925, 256242, 494262, 494462, 499262, 499525, 544662, 544665, 666665, 996465, 2225465, 2226262, 2644665, 4946662, 4946665, 4956465, 4969462, 4994262, 4994592, 4995264, 4995565, 4996465, 4996925, 4996962, 5442662, 6524262, 6655565, 6666665, 9962242, 22946662

Offset

1,1

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..557

J. Wellons, Tables of Shared Digits [archived]

Example

652642494956465^2 = 425942226222999442962245296225.

Mathematica

With[{c={2, 4, 5, 6, 9}}, Select[Flatten[Table[FromDigits/@Tuples[c, {n}], {n, 8}]], SubsetQ[ c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, Mar 06 2024 *)

Crossrefs

Sequence in context: A273238 A105647 A045586 * A137093 A335213 A080626

Adjacent sequences: A137093 A137094 A137095 * A137097 A137098 A137099

Keyword

base,nonn

Author

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

Status

approved