A377569 Number of simple graphs such that each connected component is nonseparable and the number of vertices minus the number of connected components equals n.

1, 1, 2, 5, 16, 75, 560, 7772, 202546, 9955274, 911146844, 154541913254, 48588413940171, 28410569347709449, 31024350279787141361, 63532688288261802284578, 244915643061880269492533777, 1783405573307429828266152750816, 24605670701967180148649252153837623

Offset

0,3

Links

Table of n, a(n) for n=0..18.

Crossrefs

Euler transform of A002218, shifted by 1.

Sequence in context: A002632 A020127 A179500 * A121396 A371829 A263914

Adjacent sequences: A377566 A377567 A377568 * A377570 A377571 A377572

Keyword

nonn

Author

Andrey Zabolotskiy, Nov 01 2024

Status

approved