

A053900


Numbers k such that k^2 contains only digits {1,4,8}.


1



1, 2, 9, 12, 21, 22, 29, 38, 109, 122, 221, 1191, 20359, 12017441, 64352012, 69362229, 105741122, 1347014779, 10715008859, 664190348029, 940313186572, 4263966676478, 34479242283029, 1055656895701022, 2968363385585478
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..25.
Author?, Source(txt)
P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
H. Mishima Squares consisted of 3 different digits [From Max Alekseyev, May 29 2009]


CROSSREFS

Cf. A053901.
Sequence in context: A070226 A273669 A129829 * A318681 A183207 A304797
Adjacent sequences: A053897 A053898 A053899 * A053901 A053902 A053903


KEYWORD

nonn,base,changed


AUTHOR

Patrick De Geest, Mar 15 2000


EXTENSIONS

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005
Two more terms from Jon E. Schoenfield, Sep 03 2006
Further terms from Mishima's webpage added by Max Alekseyev, May 29 2009


STATUS

approved



