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A029776
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Digits of n appear in n^3.
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6
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0, 1, 4, 5, 6, 9, 10, 11, 12, 21, 24, 25, 29, 32, 33, 34, 39, 40, 44, 49, 50, 51, 54, 55, 56, 59, 60, 61, 64, 65, 66, 67, 71, 72, 73, 75, 76, 88, 90, 97, 99, 100, 101, 102, 106, 109, 110, 111, 112, 114, 115, 116, 119, 120, 124, 125, 129, 137, 151, 153, 176
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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LINKS
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EXAMPLE
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66 is in the list because 66^3 = 287496 and 6 appears in 287496.
153 is in the list because 153^3 = 3581577 and 1, 5, 3 appear in 3581577.
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MAPLE
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filter:= n -> convert(convert(n, base, 10), set) subset convert(convert(n^3, base, 10), set):select(filter, [$0..200]); # Robert Israel, Mar 18 2020
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PROG
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(Magma) [n: n in [0..200] | Intseq(n) subset Intseq(n^3)]; // Bruno Berselli, Aug 01 2013
(PARI) isok(m) = my(d=Set(digits(m)), ddd=Set(digits(m^3))); setintersect(d, ddd) == d; \\ Michel Marcus, Mar 18 2020
(Python)
from itertools import count, islice
def A029776_gen(startvalue=0): # generator of terms >= startvalue
return filter(lambda n:set(str(n)) <= set(str(n**3)), count(max(startvalue, 0)))
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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