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a(n) = arrange digits of concatenation of divisors of n (A037278, A176558) in decreasing order (in base 10).
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%I #6 Sep 08 2022 08:46:08

%S 1,21,31,421,51,6321,71,8421,931,52110,111,6432211,311,74211,55311,

%T 864211,711,9863211,911,54221100,73211,222111,321,8644322211,5521,

%U 632211,97321,87442211,921,65533211100,311,86432211,333111,743211,75531,986643322111,731

%N a(n) = arrange digits of concatenation of divisors of n (A037278, A176558) in decreasing order (in base 10).

%C See A243363 = numbers n such that a(n) = 9876543210.

%e For n = 12; divisors of 12: 1, 2, 3, 4, 6, 12; a(12) = 6432211.

%o (Magma) A243360:=func<n | Seqint(Sort(&cat[(Intseq(k)): k in Divisors(n)]))>; [A243360(n): n in [1..100]]

%Y Cf. A037278, A176558, A243361, A243362, A243363, A243364.

%K nonn,base

%O 1,2

%A _Jaroslav Krizek_, Jun 04 2014