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A136902 Numbers k such that k and k^2 use only the digits 0, 2, 4 and 6. 1
0, 2, 20, 200, 2000, 20000, 20602, 200000, 206020, 2000000, 2006002, 2060200, 20000000, 20060020, 20602000, 200000000, 200060002, 200600200, 206020000, 2000000000, 2000600020, 2006002000, 2060200000, 20000000000, 20000600002, 20006000200, 20060020000, 20602000000, 200000000000, 200006000020, 200060002000, 200600200000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Generated with DrScheme.

LINKS

Jonathan Wellons, Table of n, a(n) for n = 1..52

J. Wellons, Tables of Shared Digits

EXAMPLE

206020000000000^2 = 42444240400000000000000000000.

CROSSREFS

Sequence in context: A303462 A085586 A322298 * A136884 A093136 A037519

Adjacent sequences: A136899 A136900 A136901 * A136903 A136904 A136905

KEYWORD

base,nonn

AUTHOR

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

STATUS

approved

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Last modified March 24 11:39 EDT 2023. Contains 361479 sequences. (Running on oeis4.)