Search: id:A024517
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%I A024517
%S A024517 1,3,7,12,18,25,34,45,56,68,82,95,112,128,146,164,183,205,227,250,275,
%T A024517 300,325,350,382,410,440,470,503,536,569,605,642,678,717,752,794,837,
%U A024517 878,918,963,1007,1054,1101,1147,1196,1246,1293,1348,1401,1452,1506
%N A024517 Position of 2*n^2 in A000404 (sums of 2 nonzero squares).
%H A024517 Herman Jamke (hermanjamke(AT)fastmail.fm), Mar 03 2008, <a href="b024517.txt">
               Table of n, a(n) for n = 1..130</a>
%o A024517 (PARI) i=0;for(n=1,1000000,f=factor(n);r=0;b=0;t=0;for(k=1,#f[,1],if(f[k,
               1]%4==1,r++,if(f[k,1]%4==3,b+=(f[k,2]%2),t=(f[k,2]%2)))); if(b==0 
               && (r>0 || t==1), i++; if(issquare(n/2),print1(i",")))) - Herman 
               Jamke (hermanjamke(AT)fastmail.fm), Mar 03 2008
%Y A024517 Sequence in context: A027379 A055998 A066379 this_sequence A005228 A000969 
               A122250
%Y A024517 Adjacent sequences: A024514 A024515 A024516 this_sequence A024518 A024519 
               A024520
%K A024517 nonn
%O A024517 1,2
%A A024517 Clark Kimberling (ck6(AT)evansville.edu)
%E A024517 More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Mar 03 2008

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