A136950 - OEIS

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A136950

Numbers k such that k and k^2 use only the digits 0, 4, 5, 6 and 9.

0, 64, 640, 6400, 64000, 640000, 6400000, 64000000, 640000000, 6400000000, 64000000000, 640000000000, 6400000000000, 9949906555064, 64000000000000, 99499065550640, 99950460549564, 640000000000000, 969559459994564, 994990655506400, 999504605495640

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Generated with DrScheme.

LINKS

Table of n, a(n) for n=1..21.

J. Wellons, Tables of Shared Digits [archived]

EXAMPLE

999504605495640^2 = 999009456406994950090059009600.

CROSSREFS

Sequence in context: A303265 A138332 A091083 * A136957 A250233 A297666

Adjacent sequences: A136947 A136948 A136949 * A136951 A136952 A136953

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved