A137065 Numbers k such that k and k^2 use only the digits 1, 6, 7, 8 and 9.

1, 9, 786, 881, 887, 7867, 8167, 8887, 81619, 81791, 81969, 88776, 88869, 88987, 781791, 819687, 876167, 988776, 988869, 7866187, 7866881, 8168119, 8179119, 8768619, 8819687, 8881886, 78177867, 81718796, 81968176, 87817891, 88191786, 88191791, 88196819, 88711886, 88768619, 88817891, 88866187, 88876987, 781779891, 786117796

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..239

J. Wellons, Tables of Shared Digits [archived]

Example

786891978716786^2 = 619198986168818791199198169796.

Crossrefs

Sequence in context: A091057 A168257 A303143 * A272853 A332179 A196981

Adjacent sequences: A137062 A137063 A137064 * A137066 A137067 A137068

Keyword

base,nonn,changed

Author

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

Status

approved