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A124889
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Central terms of triangle A124328; a(n) = A124328(2n+1,n+1) for n>=0.
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4
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1, 2, 9, 44, 235, 1296, 7329, 42104, 244719, 1434840, 8470517, 50280372, 299806572, 1794382548, 10773855210, 64865425760, 391457133672, 2367314649522, 14342441005900, 87035702613500, 528938145043707, 3218713327609648
(list; graph; refs; listen; history; internal format)
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