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Near hypotenuse numbers, i.e., n such that n^2 -+ 1 = a^2 + b^2, with a, b > 1.
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%I #13 Jul 27 2017 03:41:10

%S 3,7,8,9,12,13,17,18,19,21,22,23,27,28,30,31,32,33,34,35,37,38,41,42,

%T 43,44,46,47,48,50,51,52,53,55,57,58,60,62,63,64,67,68,70,72,73,75,76,

%U 77,78,80,81,82,83,86,87,88,89,91,92,93,96,97,98,99,100,102,103,104,105

%N Near hypotenuse numbers, i.e., n such that n^2 -+ 1 = a^2 + b^2, with a, b > 1.

%C When a=b, entries are those of A001333. - _Lekraj Beedassy_, Aug 06 2004

%e 8 and 9 are in the sequence because we have 8^2 + 1 = 4^2 + 7^2; 9^2 - 1 = 4^2 + 8^2.

%Y Cf. A001481, A009003.

%Y Union of A050795 and A050796. - _Franklin T. Adams-Watters_, Apr 26 2009

%K nonn

%O 1,1

%A _Lekraj Beedassy_, Jul 21 2004

%E Extended by _Ray Chandler_, Jul 29 2004