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Number of directed multigraphs without loops containing n edges and an infinite number of vertices modulo isomorphism and reversal of all edge directions.
0

%I #17 Aug 05 2023 22:32:43

%S 1,1,5,17,83,394,2278,13949,93898,670003,5059914,40033149,330555726,

%T 2836763749,25233047351,232080785282,2202802051834,21539083861802,

%U 216638327167235,2238260395921444,23725940481578999

%N Number of directed multigraphs without loops containing n edges and an infinite number of vertices modulo isomorphism and reversal of all edge directions.

%Y Cf. A364088 (with loops).

%K nonn

%O 0,3

%A _Saibal Mitra_, Jul 07 2023