A292909 - OEIS

%I #19 Sep 27 2017 18:51:00

%S 1,0,1,-3,9,-40,210,-1176,7273,-49932,372060,-2971540,25359411,

%T -230364498,2215550428,-22460391240,239236043985,-2669869110856,

%U 31134833803728,-378485082644400,4786085290280275,-62838103267148790,855122923978737876

%N E.g.f.: exp(1/2! * x^2 * exp(-x)).

%H Seiichi Manyama, <a href="/A292909/b292909.txt">Table of n, a(n) for n = 0..530</a>

%F a(n) = (-1)^n * A133189(n).

%o (PARI) x='x+O('x^66); Vec(serlaplace(exp(1/2!*x^2*exp(-x))))

%Y Column k=2 of A292948.

%Y Cf. A133189, A292907.

%K sign

%O 0,4

%A _Seiichi Manyama_, Sep 26 2017