simpson.coeff(n)
simpson.kD(n,k=2)n coefficients (for simpson.coeff), a k-dimensions array with a total of $n^k$ elements for simpson.kD.simpson.coeff computes the coefficients of the standard Simpson rule (for unit spaced points), according to the sequence (1+4+2+4+...+2+4+1)/3 for each dimension. simpson.kD expand the formula over a grid of $n^k$ points in k dimensions.