NEWTON BINOMIAL
1 'BIN
2 "A": ?$>A:
3 "B": ?$>B:
4 "E": ?$>E:
5 E+1$>J$~K:
6 $L0: J-1:
7  E$C$A*A$x(E-$A)*B$x$A$>M[E-$A]$,
8 $DJ: $G0:
9 "$E"

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