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A243361
a(n) = arrange digits of concatenation of divisors of n (A037278, A176558) in increasing order in base 10 (zero digits are omitted).
5
1, 12, 13, 124, 15, 1236, 17, 1248, 139, 1125, 111, 1122346, 113, 11247, 11355, 112468, 117, 1123689, 119, 112245, 11237, 111222, 123, 1122234468, 1255, 112236, 12379, 11224478, 129, 111233556, 113, 11223468, 111333, 112347, 13557, 111223346689, 137
OFFSET
1,2
COMMENTS
See A243362 = sequence of numbers n such that a(n) = 123456789: 54023, 54203, 500407, 23456789… First prime in this sequence is 23456789.
EXAMPLE
For n = 20; divisors of 20: 1, 2, 4, 5, 10, 20; a(20) = 112245.
PROG
(Magma) A243361:=func<n | Seqint(Reverse(Sort(&cat[(Intseq(k)): k in Divisors(n)])))>; [A243361(n): n in [1..100]]
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Jaroslav Krizek, Jun 04 2014
STATUS
approved