A137080 Numbers k such that k and k^2 use only the digits 2, 3, 5, 6 and 7.

5, 6, 25, 26, 75, 76, 235, 256, 275, 525, 526, 725, 2525, 2576, 5256, 5725, 5765, 7325, 7525, 7535, 23566, 27525, 27665, 52275, 56765, 57665, 57666, 57756, 72275, 72335, 72576, 73235, 73325, 75275, 75335, 235725, 256235, 256266, 275275, 276725, 572335, 722756, 723576, 725725, 726335, 732275, 733235, 733325, 756725, 2373526, 2377535, 2525325

Offset

1,1

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..733

J. Wellons, Tables of Shared Digits [archived]

Example

756726736526256^2 = 572635353773677666637777377536.

Crossrefs

Sequence in context: A039572 A033042 A039594 * A025622 A116553 A249222

Adjacent sequences: A137077 A137078 A137079 * A137081 A137082 A137083

Keyword

base,nonn,changed

Author

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

Status

approved