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A052442 Number of simple unlabeled n-node graphs of connectivity 1. 2
1, 0, 1, 3, 11, 56, 385, 3994, 67014, 1973029, 105731474 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..11.

Jens M. Schmidt, Data files in graph6 format

Eric Weisstein's World of Mathematics, k-Connected Graph.

Eric Weisstein's World of Mathematics, Biconnected Graph

CROSSREFS

Cf. A052441, A052443, A052444, A052445.

Sequence in context: A000985 A207433 A094611 * A217034 A180112 A188458

Adjacent sequences:  A052439 A052440 A052441 * A052443 A052444 A052445

KEYWORD

nonn,more,changed

AUTHOR

Eric W. Weisstein

EXTENSIONS

Terms a(8)-a(11) by Jens M. Schmidt, Feb 18 2019

STATUS

approved

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Last modified February 21 04:18 EST 2019. Contains 320371 sequences. (Running on oeis4.)