%I A104981
%S A104981 0,1,2,7,33,191,1297,10063,87669,847015,8989301,103996703,1303132269,
%T A104981 17589153719,254509227541,3931158238735,64573130459613,1124144767682215,
%U A104981 20677664894412965,400760695386194687,8163539437728923181
%N A104981 Column 1 of triangle A104980; also equals column 0 of triangle A104986, 
               which equals the matrix logartithm of A104980.
%o A104981 (PARI) {a(n)=if(n<0,0,(matrix(n+2,n+2,m,j,if(m==j,1,if(m==j+1,-m+1, -polcoeff((1-1/
               sum(i=0,m,i!*x^i))/x+O(x^m),m-j-1))))^-1)[n+1,2])}
%Y A104981 Cf. A104980, A104986.
%Y A104981 Sequence in context: A054727 A086618 A162661 this_sequence A058797 A006595 
               A059099
%Y A104981 Adjacent sequences: A104978 A104979 A104980 this_sequence A104982 A104983 
               A104984
%K A104981 nonn
%O A104981 0,3
%A A104981 Paul D. Hanna (pauldhanna(AT)juno.com), Apr 10 2005