A239221 Numbers n such that n^3 is divisible by each of its nonzero digits.
1, 2, 6, 10, 14, 20, 24, 42, 50, 60, 80, 100, 102, 126, 132, 140, 168, 180, 200, 202, 204, 210, 222, 234, 240, 246, 252, 270, 324, 342, 348, 350, 354, 360, 390, 396, 402, 420, 440, 450, 456, 462, 474, 480, 500, 504, 510, 522, 546, 552, 570, 588, 600, 612
Offset: 1
Examples
42 is in the sequence because 42^3 = 74088 which is divisible by 4, 7 and 8.
Links
- Lars Blomberg, Table of n, a(n) for n = 1..10000
Programs
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Mathematica
Select[Range[700],Union[PowerMod[#,3,IntegerDigits[#^3]/.(0-> Nothing)]] == {0}&] (* Harvey P. Dale, Jan 17 2021 *)
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PARI
isOK(n) = my(v=vecsort(digits(n^3), , 8)); for(i=1+(v[1]==0), #v, if(n^3%v[i], return(0))); 1 s=[]; for(n=1, 1000, if(isOK(n), s=concat(s, n))); s