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A053921
Squares composed of digits {2,3,9}.
1
9, 29929, 332929, 3323329, 23299929, 9222293933329, 39333932392329, 9222322299923929, 32299993392299929223929, 33932323229239993922329, 29323939329333323299399329, 3292922993992939999922923222293922929, 223222929323939222223332232999233932329
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..13.
Patrick De Geest,
Squares containing at most three distinct digits, Index entries for related sequences
.
Hisanori Mishima,
Squares consisted of 3 different digits
.
FORMULA
a(n) =
A053920
(n)^2. -
Elmo R. Oliveira
, Jul 17 2025
CROSSREFS
Cf.
A053920
.
Sequence in context:
A055309
A288940
A053931
*
A297563
A234641
A242853
Adjacent sequences:
A053918
A053919
A053920
*
A053922
A053923
A053924
KEYWORD
nonn
,
base
AUTHOR
Patrick De Geest
, Mar 15 2000
EXTENSIONS
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005
a(11) term from
Jon E. Schoenfield
, Sep 04 2006
a(12) term from Mishima's page added by
Max Alekseyev
, Mar 12 2009
a(13) from Mishima's website added by
Elmo R. Oliveira
, Jul 17 2025
STATUS
approved
