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A015108 Carlitz-Riordan q-Catalan numbers (recurrence version) for q=-11.

%I A015108 #31 Nov 17 2019 09:30:44
%S A015108 1,1,-10,-1231,1636130,23957879562,-3858392581773300,
%T A015108 -6835385537899011365535,133202313157282627679850238250,
%U A015108 28553099061411464607955930776882965774
%N A015108 Carlitz-Riordan q-Catalan numbers (recurrence version) for q=-11.
%H A015108 Seiichi Manyama, <a href="/A015108/b015108.txt">Table of n, a(n) for n = 0..44</a>
%H A015108 Robin Sulzgruber, <a href="https://doi.org/10.25365/thesis.30616">The Symmetry of the q,t-Catalan Numbers</a>, Thesis, University of Vienna, 2013.
%F A015108 a(n+1) = Sum_{i=0..n} q^i*a(i)*a(n-i) with q=-11 and a(0)=1.
%F A015108 G.f. satisfies: A(x) = 1 / (1 - x*A(-11*x)) = 1/(1-x/(1+11*x/(1-11^2*x/(1+11^3*x/(1-...))))) (continued fraction). - _Seiichi Manyama_, Dec 28 2016
%e A015108 G.f. = 1 + x - 10*x^2 - 1231*x^3 + 1636130*x^4 + 23957879562*x^5 + ...
%t A015108 m = 10; ContinuedFractionK[If[i == 1, 1, -(-11)^(i-2) x], 1, {i, 1, m}] + O[x]^m // CoefficientList[#, x]& (* _Jean-François Alcover_, Nov 17 2019 *)
%o A015108 (Ruby)
%o A015108 def A(q, n)
%o A015108   ary = [1]
%o A015108   (1..n).each{|i| ary << (0..i - 1).inject(0){|s, j| s + q ** j * ary[j] * ary[i - 1 - j]}}
%o A015108   ary
%o A015108 end
%o A015108 def A015108(n)
%o A015108   A(-11, n)
%o A015108 end # _Seiichi Manyama_, Dec 25 2016
%Y A015108 Cf. A227543.
%Y A015108 Cf. this sequence (q=-11), A015107 (q=-10), A015106 (q=-9), A015105 (q=-8), A015103 (q=-7), A015102 (q=-6), A015100 (q=-5), A015099 (q=-4), A015098 (q=-3), A015097 (q=-2), A090192 (q=-1), A000108 (q=1), A015083 (q=2), A015084 (q=3), A015085 (q=4), A015086 (q=5), A015089 (q=6), A015091 (q=7), A015092 (q=8), A015093 (q=9), A015095 (q=10), A015096 (q=11).
%Y A015108 Column k=11 of A290789.
%K A015108 sign
%O A015108 0,3
%A A015108 _Olivier Gérard_
%E A015108 Offset changed to 0 by _Seiichi Manyama_, Dec 25 2016