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 A108160 Squarefree integers m congruent to 5 modulo 8 such that the minimal solution of the Pell equation x^2 - m*y^2 = +-4 has both x and y even. 1
 37, 101, 141, 197, 269, 349, 373, 381, 389, 485, 557, 573, 677, 701, 709, 757, 781, 813, 829, 877, 885, 901, 933, 973, 997, 1149, 1157, 1173, 1213, 1293, 1301, 1389, 1405, 1605, 1613, 1717, 1757, 1765, 1861, 1885, 1893, 1901, 1909, 1949, 1973, 2069, 2077, 2093 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 REFERENCES C. F. Gauss, Disquisitiones Arithmeticae, Yale Univ. Press, 1966, section 256 VI, pp. 276-277. LINKS Table of n, a(n) for n=1..48. A. Cayley, Note sur l'équation x^2 - D*y^2 = +-4, D=5 (mod 8), J. Reine Angew. Math. 53 (1857) 369-371. S. R. Finch, Class number theory [Cached copy, with permission of the author] N. Ishii, P. Kaplan and K. S. Williams, On Eisenstein's problem, Acta Arith. 54 (1990) 323-345. CROSSREFS Cf. A048941, A048942, A107997, A107999. Sequence in context: A159231 A180518 A107999 * A044224 A044605 A130229 Adjacent sequences: A108157 A108158 A108159 * A108161 A108162 A108163 KEYWORD nonn AUTHOR Steven Finch, Jun 13 2005 EXTENSIONS More terms from Jinyuan Wang, Sep 08 2021 STATUS approved

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Last modified February 22 02:45 EST 2024. Contains 370239 sequences. (Running on oeis4.)