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A027057
(1/2)*T(n,2n-1), T given by
A027052
.
+0
1
1, 2, 4, 9, 21, 51, 128, 329, 861, 2285, 6132, 16606, 45313, 124446, 343680, 953753, 2658133, 7436541, 20875972, 58783892, 165989825, 469903672, 1333359488, 3791535934, 10802911297, 30836181436, 88169413364, 252500533673
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Maintained by
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
AT&T Labs Research
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