%I A056451
%S A056451 5,5,25,25,125,125,625,625,3125,3125,15625,15625,78125,78125,390625,
%T A056451 390625,1953125,1953125,9765625,9765625,48828125,48828125,244140625,
%U A056451 244140625,1220703125,1220703125,6103515625
%N A056451 Number of palindromes using a maximum of five different symbols.
%D A056451 M. R. Nester (1999). Mathematical investigations of some plant interaction 
               designs. PhD Thesis. University of Queensland, Brisbane, Australia.
%F A056451 5^[(n+1)/2].
%Y A056451 Cf. A016116.
%Y A056451 Sequence in context: A145764 A165826 A071340 this_sequence A074872 A162962 
               A154630
%Y A056451 Adjacent sequences: A056448 A056449 A056450 this_sequence A056452 A056453 
               A056454
%K A056451 nonn
%O A056451 1,1
%A A056451 Marks R. Nester (nesterm(AT)dpi.qld.gov.au)