%I
%S 1,1,2,3,2,1,1,2,4,6,9,10,11,10,9,6,4,2,1,1,2,4,8,12,18,27,36,45,54,
%T 60,66,69,66,60,54,45,36,27,18,12,8,4,2,1
%N Irregular triangle read by rows: coefficients of the sinflated Eulerian polynomial Q^(s)_n(x) where s is the sequence (1,3,5,...,2n1).
%H Thomas W. Pensyl and Carla D. Savage, <a href="https://people.engr.ncsu.edu/savage/PAPERS/rational.pdf">Rational lecture hall polytopes and inflated Eulerian polynomials</a>, preprint 2011.
%e Triangle begins:
%e 1;
%e 1, 2, 3, 2, 1;
%e 1, 2, 4, 6, 9, 10, 11, 10, 9, 6, 4, 2, 1;
%e 1, 2, 4, 8, 12, 18, 27, 36, 45, 54, 60, 66, 69, 66, 60, 54, 45, 36, 27, 18, 12, 8, 4, 2, 1;
%e ...
%Y Cf. A333270, A333272.
%K nonn,tabf,more
%O 1,3
%A _N. J. A. Sloane_, Mar 14 2020
