1837080domain: NAppears in sequencesTriangle whose (i,j)-th entry is binomial(i,j)*2^(i-j)*9^j.at n=32A038215Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*2^j.at n=31A038292Product of nonzero digits of A066547(n).at n=10A066581(2*n)!*((2*n+1)/2)^n/(2*n+1).at n=4A216728