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A368573
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a(n) = Sum_{k=0..n} k! * k^k.
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0
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1, 2, 10, 172, 6316, 381316, 33973636, 4184630356, 680641979476, 141267789027796, 36429267789027796, 11425158161234192596, 4282251538636575402196, 1890291840090813125264596, 970616058694975134467523796, 573593232413546537634467523796, 386530943604347679737893326531796
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history;
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internal format)
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OFFSET
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0,2
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LINKS
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FORMULA
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PROG
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(PARI) a(n) = sum(k=0, n, k!*k^k);
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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