i) is used to set the R-matrix Boundary Condition number depending on BTYPE.
Use i=1,2 for positive,negative parity coupled channels sets (respectively).

<P>
Energy <SPAN CLASS="MATH"><IMG
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 SRC="img31.svg"
 ALT="$\hbar^2k^2/2m$"></SPAN>, where <SPAN CLASS="MATH"><IMG
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 SRC="img32.svg"
 ALT="$k= f'/f$"></SPAN>, the logarithmic derivative
for all radial basis states at <SPAN CLASS="MATH"><IMG
 STYLE=""
 SRC="img33.svg"
 ALT="$r$"></SPAN>=RMATR, with <SPAN CLASS="MATH"><IMG
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