31150350domain: NAppears in sequencesDenominators of coefficients in asymptotic expansion of log z + psi(z+1/z), where psi is the digamma function.at n=30A222804A bisection of A222804.at n=15A222806a(n) = 332640*4^n*Gamma(n + 1/2)/(sqrt(Pi)*Gamma(n + 7)); super ballot numbers, row 5 of A135573.at n=18A348899