A137112 Numbers k such that k and k^2 use only the digits 2, 5, 6, 7 and 9.

5, 25, 26, 27, 75, 76, 77, 275, 277, 525, 526, 527, 725, 976, 2565, 7227, 7275, 7525, 7527, 7565, 7725, 22925, 25676, 27525, 52227, 52725, 72565, 72576, 75277, 97765, 97976, 256227, 256266, 269777, 275676, 276725, 725725, 727525, 759576, 769777, 772527, 792275, 962576, 979777, 2562576, 2562727, 2579275, 2592725, 2767665, 2779525, 2792275

Offset

1,1

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..392

J. Wellons, Tables of Shared Digits [archived]

Example

962579692956725^2 = 926559665292662976572722725625.

Crossrefs

Sequence in context: A121003 A121007 A043057 * A037410 A070381 A136912

Adjacent sequences: A137109 A137110 A137111 * A137113 A137114 A137115

Keyword

base,nonn

Author

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

Status

approved