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A061809
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When cubed gives number composed just of the digits 1, 2, 3, 4.
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0
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OFFSET
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1,2
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COMMENTS
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LINKS
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MATHEMATICA
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Do[ If[ Union[ Join[ {1, 2, 3, 4}, IntegerDigits[n^3] ]] == {1, 2, 3, 4}, Print[n]], {n, 0, 10^8} ]
Table[Surd[#, 3]&/@Select[FromDigits/@Tuples[{1, 2, 3, 4}, n], IntegerQ[ Surd[ #, 3]]&], {n, 6}]//Flatten (* The program generates the first 4 terms of the sequence; to generate the 5th term, change the "6" to "19, " but the program will take a long time to run. *) (* Harvey P. Dale, Apr 13 2021 *)
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CROSSREFS
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Cf. A031997 (odd and digits 0,1,2,3), A043681 (0,1,2,3), A048792 (0,1,2,3,4), A061813 (1,2,3,4,5).
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KEYWORD
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base,more,nonn
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AUTHOR
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STATUS
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approved
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