A320490 - OEIS

%I #14 Jan 28 2020 14:56:25

%S 1,2,0,4,16,98,766,9982,205574,6546960,352380815,29668304472,

%T 4303531875334,985391751078694,391866509413730125,

%U 248491878411568471280,274544424465173973822126,488310442484985365942048784,1513516279388226700191978571979

%N Inverse Euler transform of A004106.

%C The inverse Euler transform of A004106 does not give the number of connected edge-self-dual nets. The combinatorial interpretation of this sequence is that of either a connected edge-self-dual net or a pair of distinct connected nets which are edge-dual to each other (but not edge-self-dual). - _Andrew Howroyd_, Jan 28 2020

%H Andrew Howroyd, <a href="/A320490/b320490.txt">Table of n, a(n) for n = 0..50</a>

%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>

%F EULERi transform of A004106.

%Y Cf. A004106, A320491.

%K nonn

%O 0,2

%A _N. J. A. Sloane_, Oct 25 2018

%E Definition edited by _Andrew Howroyd_, Jan 26 2020