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A089459
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Shifts 2 places left under the hyperbinomial transform.
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0
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1, 1, 1, 2, 6, 30, 221, 2201, 27769, 424757, 7639190, 157969167, 3692733181, 96293669499, 2771232779481, 87247362424120, 2982901522141490, 110057420712635526, 4358745145279372293, 184433423940319376323
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OFFSET
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0,4
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LINKS
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FORMULA
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a(n+2) = sum(k=0, n, (n-k+1)^(n-k-1)*binomial(n, k)*a(k)), for n>=0, with a(0)=1, a(1)=1.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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