8000882domain: NAppears in sequencesE.g.f.: 2*exp(x)/(1-x)^3.at n=8A001340Square array A(row,col) = Sum_{k=0..row} binomial(row,k)*(1+col+k)!, read by descending antidiagonals as A(0,0), A(0,1), A(1,0), A(0,2), A(1,1), A(2,0), ...at n=53A276588Transpose of A276588.at n=46A276589