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A253201 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, 5, 6, 7, 8, 10, 12, 14, 17, 18, 19, 20, 21, 22, 23, 24, 27, 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. A253200.

Sequence in context: A039041 A079253 A076054 * A139636 A219922 A159559

Adjacent sequences:  A253198 A253199 A253200 * A253202 A253203 A253204

KEYWORD

nonn,more

AUTHOR

Arkadiusz Wesolowski, Mar 21 2015

STATUS

approved

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Last modified January 23 10:50 EST 2020. Contains 331171 sequences. (Running on oeis4.)