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A253200 Nonnegative integers n for which the equation x^4 + n*x^2*y^2 + y^4 = z^2 has no solution in positive integers x, y, z, with x > y. 1
0, 1, 3, 4, 5, 6, 7, 9, 10, 11, 14, 15, 18, 19, 20, 21, 22, 25, 28, 29 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..20.

H. C. Pocklington, Some Diophantine Impossibilities, Proc. Cambridge Phil. Soc. 17 (1912), pp. 114-116.

CROSSREFS

Cf. A253201.

Sequence in context: A113777 A285659 A256421 * A227938 A039096 A083121

Adjacent sequences:  A253197 A253198 A253199 * A253201 A253202 A253203

KEYWORD

nonn,more

AUTHOR

Arkadiusz Wesolowski, Mar 21 2015

STATUS

approved

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Last modified September 23 20:42 EDT 2021. Contains 347617 sequences. (Running on oeis4.)