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%I #4 Mar 30 2012 16:46:24
%S 1,2,4,7,12,21,39,71,131,240,441,811,1491,2741,5038,9261,17026,31301,
%T 57543,105788,194481,357538,657302,1208395,2221533,4084101,7508278,
%U 13803341,25376286,46652177,85766121
%N Powers of fifth root of 21 rounded up.
%K nonn
%O 0,2
%A _N. J. A. Sloane_.
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