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%I A108116
%S A108116 2002,131003,231213,300131,312132,420024,12132003,14130043,15120025,
%T A108116 23121300,23421314,25121005,25320035,30023121,31213200,31413004,
%U A108116 34003141,40031413,41312432,45001415,45121425,45300435,50012152,51410054,52002151,52412154,53002352,53400354,61310036
%N A108116 Base 10 weak Skolem-Langford numbers.
%C A108116 Self-describing numbers: between two digits "d" there are d digits.
%C A108116 a(n) has either 0 or 2 instances of any digit, hence even number of digits.
%C A108116 Largest element is a(20120) = 978416154798652002.
%D A108116 E. Angelini, "Jeux de suites", in Dossier Pour La Science, pp. 32-35, Volume 59 (Jeux math'), April/June 2008, Paris.
%H A108116 D. Wilson, <a href="/A108116/b108116.txt">Complete table of n, a(n) for n = 1..20120</a>
%e A108116 In "2002" there are 2 digits between the two 2's and 0 digits between the two 0's; in "131003" there is 1 digit between the two 1's, 3 digits between the two 3's and 0 digit between the two 0's.
%Y A108116 Base 10 strong Skolem-Langford numbers are in A132291.
%K A108116 base,easy,fini,full,nonn
%O A108116 1,1
%A A108116 _Eric Angelini_, Jun 26 2005, Aug 10 2007
%E A108116 Edited by _N. J. A. Sloane_, Nov 18 2007

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