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Question-212991




Question Number 212991 by efronzo1 last updated on 28/Oct/24
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Answered by Frix last updated on 28/Oct/24
H(n)=Σ_(k=1) ^n  k!(k^2 +k+1)  ((H(n)+1)/((n+1)!))=n+1     [test it for n=1, 2, 3,...]  ⇒ answer is 2026
H(n)=nk=1k!(k2+k+1)H(n)+1(n+1)!=n+1[testitforn=1,2,3,]answeris2026

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