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1.3
If
n
is odd, there are
S_n=20^
[
(
(n/2)+1
)
]
symmetrical protein sequences.
1.3
If
n
is odd, there are
S_n=20^
[
(
n+1
)
/2
]
symmetrical protein sequences.
Corrected by
Tikuang Lee, 9/21/95.