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A029775
Squares k^2 whose digits appear in k.
2
0, 1, 100, 10000, 55225, 1000000, 1100401, 1525225, 5522500, 8898289, 22676644, 23348224, 100000000, 107661376, 110040100, 110103049, 110166016, 119311929, 125552025, 152152225, 152522500, 153388225, 155002500, 160022500, 204204100, 219899241, 262602025
OFFSET
1,3
LINKS
FORMULA
a(n) = A029774(n)^2. - Sean A. Irvine, Mar 04 2020
EXAMPLE
The digits of 55225 (= 235^2) are a subset of {2,3,5}.
MAPLE
filter:= proc(k) convert(convert(k^2, base, 10), set) subset convert(convert(k, base, 10), set) end proc:
map(t -> t^2, select(filter, [$0..10^5])); # Robert Israel, Aug 25 2024
CROSSREFS
Cf. A029774.
Sequence in context: A108741 A192937 A029798 * A077440 A181412 A029794
KEYWORD
nonn,base
EXTENSIONS
Title improved and more terms from Sean A. Irvine, Mar 04 2020
STATUS
approved