Search: id:A154357
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%I A154357
%S A154357 2,13,74,185,346,557,818,1129,1490,1901,2362,2873,3434,4045,4796,5417,
%T A154357 6178,6989,7850,8761,9722,10733,11794,12905,14066,15277,16538,17849,
%U A154357 19210,20621,22082,23593,25154,26765,28426,30137,31898
%N A154357 a(n)=25n^2-14n+2
%C A154357 Pell's equation X^2-AY^2=1 with A=a(n); X=50*a(n)-1 [A154358] or [A154359]; 
               Y=250n-180 [A154360], or Y=250n-70 [A154361]
%F A154357 a(n)=25n^2-14n+2
%e A154357 For n=0, a(0)=2; n=3, a(3)=185
%Y A154357 Cf. A154355, A154358, A154359, A154360, A154361
%Y A154357 Sequence in context: A109112 A163190 A004027 this_sequence A161130 A007509 
               A077413
%Y A154357 Adjacent sequences: A154354 A154355 A154356 this_sequence A154358 A154359 
               A154360
%K A154357 nonn
%O A154357 1,1
%A A154357 Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 08 2009

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