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%I #8 Apr 14 2021 20:04:20
%S 1,1,7,9,43,87,387,665,8499,17003,72345,131903,913919,1825875,7629371,
%T 14275257,410980675,820899123,3396389533,6448133283,47448015653,
%U 94775447369,389689995525,746772134927,11150225818167,22273876637759
%N Numerators of power series for sqrt(1+x^2)/sqrt(1-x).
%H Robert Israel, <a href="/A067649/b067649.txt">Table of n, a(n) for n = 0..1663</a>
%p S:= series(sqrt(1+x^2)/sqrt(1-x),x,101):
%p seq(numer(coeff(S,x,j)),j=0..100); # _Robert Israel_, Apr 14 2021
%Y Denominators are given in A046161(n)
%K nonn
%O 0,3
%A _Benoit Cloitre_, Feb 02 2002