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A248039 Numbers n such that n*A007954(n) contains the same distinct digits as n. 0

%I #18 Sep 08 2022 08:46:10

%S 0,1,11,111,792,1111,1376,2174,2841,11111,11628,12168,12763,12841,

%T 14213,14228,14663,19842,24314,24679,24738,24786,26439,26731,26938,

%U 29126,39117,39228,49326,64113,76983,79328,83694,83712,83764,86429,87164,89174,92387,92476,93711,94831,98174

%N Numbers n such that n*A007954(n) contains the same distinct digits as n.

%C A002275 is a subsequence, thus this sequence is infinite.

%o (PARI)

%o for(n=0, 10^6, d=digits(n); p=prod(i=1, #d, d[i]); if(vecsort(digits(n), , 8)==vecsort(digits(n*p), , 8), print1(n, ", ")))

%o (Magma) [n: n in [0..10^5] | Set(Intseq(n*&*Intseq(n))) eq Set(Intseq(n))]; // _Bruno Berselli_, Oct 09 2014

%Y Cf. A002275 (repunits), A007954 (digit product).

%Y Cf. A247887 (similar, with n + digit sum), A247888 (similar, with n + digit product).

%K nonn,base

%O 1,3

%A _Derek Orr_, Sep 30 2014

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Last modified May 18 09:54 EDT 2024. Contains 372620 sequences. (Running on oeis4.)