%I A025167
%S A025167 1,3,17,139,1473,19091,291793,5129307,101817089,2250495523,54780588561,
%T A025167 1455367098923,41888448785857,1298019439099059,43074477771208913,
%U A025167 1523746948247663611,57229027745514785793,2274027983943883110467
%N A025167 E.g.f: exp(x/(1-2*x))/(1-2*x).
%C A025167 Polynomials in A021009 evaluated at -2.
%F A025167 Sum_{k=0..n} k!*3^k*C(n, k) (from Robert G. Wilson v Mar 16 2005)
%F A025167 a(n) = Sum_{k=0..n-1} 2^{n-1-k}*[(n-1)! ]^2/[(k!)^2*(n-1-k)! ] - Huajun 
               Huang (huanghu(AT)auburn.edu), Oct 10 2005
%t A025167 Table[ n! 2^n LaguerreL[ n, -1/2 ], {n, 0, 12} ]
%t A025167 f[n_] := Sum[k!*2^k*Binomial[n, k]^2, {k, 0, n}]; Table[ f[n], {n, 0, 
               17}] (from Robert G. Wilson v Mar 16 2005)
%Y A025167 Cf. A025166, A025168.
%Y A025167 Sequence in context: A105630 A006290 A060003 this_sequence A136727 A120022 
               A001865
%Y A025167 Adjacent sequences: A025164 A025165 A025166 this_sequence A025168 A025169 
               A025170
%K A025167 nonn
%O A025167 0,2
%A A025167 w.meeussen (wouter.meeussen(AT)pandora.be)
%E A025167 More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 29 2003