Search: id:A032122
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%I A032122
%S A032122 5,15,75,325,1625,7875,39375,195625,978125,4884375,24421875,
%T A032122 122078125,610390625,3051796875,15258984375,76294140625,
%U A032122 381470703125,1907349609375,9536748046875,47683720703125
%N A032122 Number of reversible strings with n beads of 5 colors.
%H A032122 C. G. Bower, <a href="transforms2.html">Transforms (2)</a>
%F A032122 "BIK" (reversible, indistinct, unlabeled) transform of 5, 0, 0, 0...
%F A032122 a(n) = 1/2 * (5^n + 5^[(n+1)/2]) = 5*A001447(n+1). - Ralf Stephan (ralf(AT)ark.in-berlin.de), 
               Jul 07 2003
%Y A032122 Sequence in context: A149653 A149654 A149655 this_sequence A064678 A088935 
               A030487
%Y A032122 Adjacent sequences: A032119 A032120 A032121 this_sequence A032123 A032124 
               A032125
%K A032122 nonn
%O A032122 1,1
%A A032122 Christian G. Bower (bowerc(AT)usa.net)

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