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 A037942 Numbers of the form x^2 + y^2 with x >= 0, y >= 0, gcd(x,y)=1, with multiplicity. 2
 1, 2, 5, 10, 13, 17, 25, 26, 29, 34, 37, 41, 50, 53, 58, 61, 65, 65, 73, 74, 82, 85, 85, 89, 97, 101, 106, 109, 113, 122, 125, 130, 130, 137, 145, 145, 146, 149, 157, 169, 170, 170, 173, 178, 181, 185, 185, 193, 194 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references) Eric Weisstein's World of Mathematics, See also PROG (PARI) s=14; v=[]; for(y=0, s, for(x=0, y, if(gcd(x, y)==1, r=x*x+y*y; if(r<=s*s, v=concat(v, r))))); vecsort(v) \\ Craig Clapp (craig_clapp(AT)earthlink.net), Apr 30 2010 CROSSREFS If repetitions are deleted, same as A008784. Cf. A224770 (multiplicity 2), A281877 (multiplicity >= 3). Sequence in context: A180161 A099261 A103215 * A008784 A224450 A226828 Adjacent sequences:  A037939 A037940 A037941 * A037943 A037944 A037945 KEYWORD nonn AUTHOR Nissim Broudo (broudo(AT)brain.math.fau.edu) EXTENSIONS Missing second instance of 85 (6^2+7^2 = 2^2+9^2 = 85) added by Craig Clapp (craig_clapp(AT)earthlink.net), Apr 30 2010 STATUS approved

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Last modified April 7 00:47 EDT 2020. Contains 333291 sequences. (Running on oeis4.)