A137014 Numbers k such that k and k^2 use only the digits 1, 2, 6, 7 and 8.

1, 11, 26, 261, 276, 826, 881, 1126, 1276, 2681, 8881, 78181, 78881, 82261, 88776, 161761, 261126, 277826, 1128126, 1271881, 1618276, 7866881, 8226276, 8287811, 8878126, 11281276, 12722681, 26781761, 27717826, 78221881, 78222681, 78878881, 161767681, 161777261, 166182811, 167812776, 261278181, 266678126, 266876126, 268116881

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..237

J. Wellons, Tables of Shared Digits [archived]

Example

161767617828126^2 = 26168762177786628877276671876.

Crossrefs

Sequence in context: A224197 A027521 A238147 * A137013 A014468 A156373

Adjacent sequences: A137011 A137012 A137013 * A137015 A137016 A137017

Keyword

base,nonn

Author

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

Status

approved