A137092 Numbers k such that k and k^2 use only the digits 2, 3, 7, 8 and 9.

3, 27, 2973, 2983, 88223, 88277, 298327, 299833, 993923, 2978923, 9893323, 9939277, 27978277, 28773233, 28798233, 28978923, 29729327, 29828223, 29983327, 29998333, 88283233, 93989323, 98887733, 98893323, 287989233, 289799827, 297293327, 298978223, 887299233, 893293277, 989339827, 989893923, 2787979327, 2827328923

Offset

1,1

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..182

J. Wellons, Tables of Shared Digits [archived]

Example

893797389732927^2 = 798873773893393799392387987329.

Crossrefs

Sequence in context: A158113 A078233 A009039 * A122215 A122217 A316368

Adjacent sequences: A137089 A137090 A137091 * A137093 A137094 A137095

Keyword

base,nonn,changed

Author

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

Status

approved