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A253408 Values of difference z-y that solve equation x^2 + y^2 = z^2 + 2. 0

%I #25 Feb 19 2015 15:25:17

%S -1,1,7,17,23,31,41,47,49,71,73,79,89,97,103,113,119,127,137,151,161,

%T 167,191,193,199,217,223,233,239,241,257,263,271,281,287,289,311,313,

%U 329,337,343,353,359,367,383,391,401,409,431,433,439,449,457,463,479,487

%N Values of difference z-y that solve equation x^2 + y^2 = z^2 + 2.

%C All values are congruent to +-1 (mod 8).

%F a(n)^2 mod 8 = 1.

%F a(n) = A058529(n-1), n>1.

%e a(3)=7 because 25^2 + 41^2 = 48^2 + 2 and 48 - 41 = 7.

%Y Cf. A058529.

%K sign

%O 1,3

%A _Carmine Suriano_, Jan 05 2015

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)