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A025134 a(n) = n-th elementary symmetric function of C(n,0), C(n,1), ..., C(n,n). 2

%I

%S 1,2,5,24,256,6500,407700,64538880,26120421376,27252226455552,

%T 73710997920000000,519006451497395400000,9544405721673726148608000,

%U 459675814976476432499714440320,58118199039973755223479833897882880,19330456644008414104033256172750000000000

%N a(n) = n-th elementary symmetric function of C(n,0), C(n,1), ..., C(n,n).

%H Andrew Howroyd, <a href="/A025134/b025134.txt">Table of n, a(n) for n = 0..50</a>

%o (PARI)

%o ESym(u)={my(v=vector(#u+1)); v[1]=1; for(i=1, #u, my(t=u[i]); forstep(j=i, 1,-1, v[j+1]+=v[j]*t)); v}

%o a(n)={ESym(binomial(n))[n+1]} \\ _Andrew Howroyd_, Dec 19 2018

%K nonn

%O 0,2

%A _Clark Kimberling_

%E Terms a(10) and beyond from _Andrew Howroyd_, Dec 19 2018

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Last modified May 20 03:10 EDT 2019. Contains 323412 sequences. (Running on oeis4.)