A137031 Numbers k such that k and k^2 use only the digits 1, 3, 4, 8 and 9.

1, 3, 9, 38, 43, 141, 183, 438, 441, 1183, 1188, 1191, 1391, 3391, 3438, 9188, 9433, 11893, 31488, 43988, 91183, 114891, 141191, 141391, 183933, 333891, 911833, 939938, 943988, 1183188, 1394393, 1394433, 1411893, 3334433, 3343941, 9391183, 9399143, 9483891, 11911893, 14113183, 18198391, 33343833, 33344893, 33439333, 33448933, 43381833

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..337

J. Wellons, Tables of Shared Digits [archived]

Example

198341484349893^2 = 39339344414118849844849111449.

Crossrefs

Sequence in context: A107886 A220452 A130407 * A047148 A149023 A149024

Adjacent sequences: A137028 A137029 A137030 * A137032 A137033 A137034

Keyword

base,nonn,changed

Author

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

Status

approved