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A289471
Number of planar strictly 2-connected graphs on n edges.
2
1, 0, 1, 1, 2, 3, 7, 15, 39, 106, 316, 1030, 3553, 13006, 49780, 197281, 804649, 3358885, 14289507, 61769577
OFFSET
1,5
FORMULA
a(n) = A343869(n) - A002840(n). - Andrew Howroyd, May 04 2021
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Ed Pegg Jr, Jul 06 2017
EXTENSIONS
a(12)-a(13) corrected and a(14)-a(20) from Andrew Howroyd, May 04 2021
STATUS
approved