A137026 Numbers k such that k and k^2 use only the digits 1, 3, 4, 6 and 8.

1, 4, 6, 8, 38, 41, 344, 1146, 1188, 3381, 3444, 3631, 6441, 8131, 11481, 33688, 68131, 81344, 116881, 136441, 333641, 338646, 364844, 364881, 384881, 431441, 681441, 1146481, 1366881, 1861146, 3341881, 3363646, 3648488, 4314381, 4318381, 6431441, 6468641, 13643631, 18388688, 33341141, 43181441, 43433131, 64333844, 64411481, 68444641

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..227

J. Wellons, Tables of Shared Digits [archived]

Example

431838648646481^2 = 186484618464818866413313683361.

Crossrefs

Sequence in context: A108270 A019161 A291718 * A090938 A058229 A087271

Adjacent sequences: A137023 A137024 A137025 * A137027 A137028 A137029

Keyword

base,nonn,changed

Author

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

Status

approved