%I A007893
%S A007893 1,4,9,16,1,4,9,16,25,4,9,16,25,36,9,16,25,36,49,16,25,36,49,64,25,
%T A007893 36,49,64,81,36,49,64,81,100,49,64,81,100,121,64,81,100,121,144,81,
%U A007893 100,121,144,169,100,121,144,169,196,121,144,169,196,225,144,169,196
%N A007893 A Kutz sequence.
%D A007893 R. E. Kutz, Two unusual sequences, Two-Year College Mathematics Journal, 
               12 (1981), 316-319.
%F A007893 The pattern is obvious!
%F A007893 a(n) = (n-4*[ n/5 ])^2 - Michael Somos
%Y A007893 Sequence in context: A070447 A106548 A106546 this_sequence A070446 A070445 
               A070444
%Y A007893 Adjacent sequences: A007890 A007891 A007892 this_sequence A007894 A007895 
               A007896
%K A007893 nonn,easy
%O A007893 1,2
%A A007893 N. J. A. Sloane (njas(AT)research.att.com).