A243361 a(n) = arrange digits of concatenation of divisors of n (A037278, A176558) in increasing order in base 10 (zero digits are omitted).

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.

Links

Table of n, a(n) for n=1..37.

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

Cf. A037278, A176558, A243360, A243362, A243363, A243364.

Sequence in context: A064003 A135123 A129476 * A037278 A164852 A362113

Adjacent sequences: A243358 A243359 A243360 * A243362 A243363 A243364

Keyword

nonn,base

Author

Jaroslav Krizek, Jun 04 2014

Status

approved