A286958 - OEIS

%I #21 Feb 26 2024 16:19:23

%S 1,1,2,4,2,11,8,2,34,62,14,2,156,514,163,18,2,1044,7147,2583,317,24,2,

%T 12346,170803,70667,6720,513,29,2,274668,7613603,3566498,247454,13525,

%U 785,36,2

%N Triangle read by rows: T(n,k) is the number of graphs with n vertices with connected domination number k.

%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ConnectedDominationNumber.html">Connected Domination Number</a>.

%e Triangle begins:

%e     1;

%e     1;

%e     2;

%e     4,   2;

%e    11,   8,   2;

%e    34,  62,  14,  2;

%e   156, 514, 163, 18, 2;

%e   ...

%Y Row sums are A001349.

%Y Column k=1 is A000088(n-1).

%Y Cf. A263284, A332400, A332401.

%K nonn,tabf,more

%O 1,3

%A _Eric W. Weisstein_, May 17 2017