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A308323
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a(n) = Sum_{i_1=0..n} Sum_{i_2=0..n} ... Sum_{i_n=0..n} (-1)^(i_1 + i_2 + ... + i_n) * multinomial(i_1 + i_2 + ... + i_n; i_1, i_2, ..., i_n).
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2
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1, 0, 3, -692, 25413205, -247578134832564, 1049539393188856278390451, -2871690441592604257533055860715129272, 7040796701370550878156702345258827433898638874681737, -20490586759699718697495728993626502030472234718733294544426997558792280
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OFFSET
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0,3
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LINKS
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PROG
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(PARI) {a(n) = sum(i=0, n^2, (-1)^i*i!*polcoef(sum(j=0, n, x^j/j!)^n, i))}
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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