Search: id:A081241
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%I A081241
%S A081241 1,2,3,5,4,6,7,11,9,13,8,12,10,14,15,23,19,27,17,25,21,29,16,24,20,28,
%T A081241 18,26,22,30,31,47,39,55,35,51,43,59,33,49,41,57,37,53,45,61,32,48,40,
%U A081241 56,36,52,44,60,34,50,42,58,38,54,46,62,63,95,79,111,71,103,87,119,67
%N A081241 Position in B of reversal of n-th term of B, where B is the logic-binary 
               sequence, A007931.
%C A081241 A self-inverse permutation of the natural numbers; a(n) = n if and only 
               if A007931(n) is a palindrome.
%H A081241 <a href="Sindx_Per.html#IntegerPermutation">Index entries for sequences 
               that are permutations of the natural numbers</a>
%e A081241 A007931 = (1,2,11,12,21,22,111,112,121,122,211,...); and (reversal of 
               term #8) = term #11.
%Y A081241 Cf. A007931.
%Y A081241 Sequence in context: A132196 A153150 A069766 this_sequence A075168 A075169 
               A138606
%Y A081241 Adjacent sequences: A081238 A081239 A081240 this_sequence A081242 A081243 
               A081244
%K A081241 base,easy,nonn
%O A081241 1,2
%A A081241 Clark Kimberling (ck6(AT)evansville.edu), Mar 11 2003

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