2912168domain: NAppears in sequencesConvolution of A007054 (super ballot numbers) with A000984 (central binomial coefficients).at n=11A038665a(n) = (2+[n/2])*n!/((1+[n/2])*[n/2]!^2).at n=24A275329Number of coalescent histories for pseudocaterpillar gene trees G and caterpillar species trees S.at n=11A306423