A032114 - OEIS

%I #12 Jan 04 2021 19:36:34

%S 1,3,12,76,655,6906,85204,1201824,19071693,336276370,6522231826,

%T 138001776936,3163262495419,78085513281426,2065232400748560,

%U 58263438835891456,1746434237976248665,55428349087686179682

%N "BIJ" (reversible, indistinct, labeled) transform of 1,2,3,4,...

%H C. G. Bower, <a href="/transforms2.html">Transforms (2)</a>

%F E.g.f.: B(A(x)) where B(x) is e.g.f. for A001710 and A(x)=x*exp(x). - _Geoffrey Critzer_, Jun 28 2014

%t nn=18;a=x Exp[x];Range[0,nn]!CoefficientList[Series[1/(1-x)/2+x/2-1/2,{x,0,nn}],x] (* _Geoffrey Critzer_, Jun 28 2014 *)

%K nonn

%O 1,2

%A _Christian G. Bower_