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A291668 Numbers k such that 0 is the smallest decimal digit of k^4. 4

%I #9 Aug 29 2017 09:49:45

%S 7,8,10,12,15,18,19,20,25,29,30,32,35,38,40,43,44,45,48,49,50,51,53,

%T 54,55,57,60,65,67,70,75,77,78,79,80,81,85,86,90,93,94,95,99,100,101,

%U 102,103,105,107,108,110,111,113,114,115,116,119,120,125,126,127

%N Numbers k such that 0 is the smallest decimal digit of k^4.

%e 7 is in the sequence because 7^4 = 2401, the smallest decimal digit of which is 0.

%o (PARI) select(k->vecmin(digits(k^4))==0, vector(500, k, k))

%Y Cf. A291669, A291670, A291671, A291672.

%K nonn,base

%O 1,1

%A _Colin Barker_, Aug 29 2017

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)