A146979 - OEIS

%I #7 Aug 28 2013 13:40:55

%S 1,43,660,8834,110452,1325746,15469935,176818558,1989376733,

%T 22105676071,243175818741

%N Number of Pythagorean triples (a,b,c), a^2+b^2=c^2, with a,b,c all n-digit numbers, a<b.

%e n=1: a(1)=1 Pythagorean triple (2,3,5), 3^2+4^2=5^2; n=2: a(2)=43 Pythagorean triples {a,b,c}, {10, 24, 26},..,{65,72,97}.

%K base,more,nonn

%O 1,2

%A _Zak Seidov_, Nov 04 2008

%E a(6)-a(11) from _Lars Blomberg_, Aug 28 2013