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Search: id:A131574
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| A131574 |
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The product n of two distinct odd primes such that x^2+y^2=n has integer solutions. |
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+0
1
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| 65, 85, 145, 185, 205, 221, 265, 305, 365, 377, 445, 481, 485, 493, 505, 533, 545, 565, 629, 685, 689, 697, 745, 785, 793, 865, 901, 905, 949, 965, 985, 1037, 1073, 1145, 1157, 1165, 1189, 1205, 1241, 1261, 1285, 1313, 1345, 1385, 1405, 1417, 1465, 1469
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Colin Barker (c.barker(AT)orange.fr), Aug 29 2007, Table of n, a(n) for n = 1..172
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EXAMPLE
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x^2+y^2=65=5*13 has solutions (x,y)=(1,8),(4,7),(7,4) and (8,1)
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CROSSREFS
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Adjacent sequences: A131571 A131572 A131573 this_sequence A131575 A131576 A131577
Sequence in context: A071011 A084648 A024409 this_sequence A143852 A020273 A034071
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KEYWORD
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nonn
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AUTHOR
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Colin Barker (c.barker(AT)orange.fr), Aug 28 2007, corrected Aug 29 2007
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