List of B-basis functions $ {B}_{i\pmb{\mu n l L}}$: $\pmb{\mu} = $ `elements`, $\pmb{n} = $ `ns`, $\pmb{l} = $ `ls`, $\pmb{L} = $ `LS`) and corresponding coefficients $ {c}^{(p)}_{\mu_i\pmb{\mu n l L}} =$ `coeffs` for two densities
List of B-basis functions $ {B}_{i\pmb{\mu n l L}}$: $\pmb{\mu} = $ `elements`, $\pmb{n} = $ `ns`, $\pmb{l} = $ `ls`, $\pmb{L} = $ `LS`) and corresponding coefficients $ {c}^{(p)}_{\mu_i\pmb{\mu n l L}} =$ `coeffs` for two densities