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A070227
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a(n) = Sum_{k>=0} (k+n)!^n/((k+n)!*(k!^n)*exp(1)).
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3
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1, 1, 7, 2971, 326922081, 25571928251231076, 3104750712141723393459934903, 1106411839720559249283387766293758050197271, 1982711933502621451047063899803427489760228712955842831202561
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listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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FORMULA
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PROG
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(PARI) precision 1000 digits : for(n=1, 9, print1(round(sum(k=0, 200, (k+n)!^n/((k+n)!*(k!^n)*exp(1)))), ", "))
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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