411984

Appears in sequences

• Number of reduced words of length n in the Weyl group B_8.at n=27A161717
• Number of excursions of length n with Motzkin-steps avoiding the consecutive steps UU, UD, HH and DU.at n=36A329689
• Irregular triangular array T; row n shows the coefficients of the (n-1)-st polynomial in the obverse convolution s(x)**t(x), where s(x) = 2^n and t(x) = x+2. See Comments.at n=21A375046