A339068 Number of unlabeled series-reduced 2-connected graphs with n edges.

1, 0, 1, 3, 5, 9, 26, 65, 193, 632, 2173, 8049, 31690, 130773, 563849, 2525348, 11702264, 55948154, 275331956, 1392136462, 7221272289, 38380011748, 208778309856

Offset

6,4

Links

Table of n, a(n) for n=6..28.

Crossrefs

Column sums of A339069.

Cf. A006289, A010355, A338511.

Sequence in context: A306838 A171879 A171877 * A004044 A192152 A217098

Adjacent sequences: A339065 A339066 A339067 * A339069 A339070 A339071

Keyword

nonn,more

Author

Andrew Howroyd, Nov 24 2020

Status

approved