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A096192
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a(n) = Sum_{k=1..n} C(n,k)^4 where C(n,k) is binomial(n,k).
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1
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1, 17, 163, 1809, 21251, 263843, 3395015, 44916497, 607041379, 8345319267, 116335834055, 1640651321763, 23365271704711, 335556407724359, 4854133484555663, 70666388112940817, 1034529673001901731
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