A136954 Numbers k such that k and k^2 use only the digits 0, 4, 6, 7 and 8.

0, 8, 78, 80, 88, 780, 800, 878, 880, 7800, 8000, 8780, 8800, 8874, 68474, 78000, 80000, 80474, 80478, 86478, 87800, 88000, 88740, 88808, 684740, 778874, 780000, 800000, 804740, 804780, 864780, 874474, 878000, 880000, 887400, 888080, 6840078, 6847400, 7788740, 7800000, 8000000, 8040448, 8044008, 8047400, 8047800, 8607474, 8646774

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..515

J. Wellons, Tables of Shared Digits [archived]

Example

864804606066878^2 = 747887006674488040884608666884.

Crossrefs

Sequence in context: A304303 A074841 A272208 * A328467 A347322 A202732

Adjacent sequences: A136951 A136952 A136953 * A136955 A136956 A136957

Keyword

base,nonn

Author

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

Status

approved