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A137004 Numbers k such that k and k^2 use only the digits 1, 2, 5, 6 and 7. 2
1, 5, 11, 15, 16, 25, 26, 75, 76, 125, 165, 166, 275, 276, 511, 515, 516, 525, 526, 715, 716, 725, 1125, 1275, 1665, 1666, 2261, 2275, 2675, 5125, 5165, 7261, 7525, 11215, 11275, 12511, 12515, 12715, 16665, 16666, 25525, 25526, 25715, 25725, 26675, 26761, 27525, 51211, 72261, 72576, 125125, 125165, 125166, 125525, 125526, 127525, 161761, 165125 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Generated with DrScheme.

Subsequence of A137005 and A137006. - M. F. Hasler, Jan 24 2008

LINKS

Jonathan Wellons, Table of n, a(n) for n = 1..774

J. Wellons, Tables of Shared Digits

EXAMPLE

756156171512576^2 = 571772155716556252275726155776.

CROSSREFS

Sequence in context: A171418 A213444 A314002 * A137005 A137006 A137003

Adjacent sequences:  A137001 A137002 A137003 * A137005 A137006 A137007

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified January 22 05:19 EST 2022. Contains 350481 sequences. (Running on oeis4.)