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A086266 Triangle of counts of s-clusters in n X n (0,1)-matrices for s=0, 1, .... 0

%I #10 Feb 04 2023 10:19:07

%S 1,1,1,13,2,1,218,208,78,6,1,1,11506,21172,20262,9560,2593,408,32,2

%N Triangle of counts of s-clusters in n X n (0,1)-matrices for s=0, 1, ....

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/s-Cluster.html">s-Cluster</a>

%e Triangle begins:

%e 1, 1;

%e 1, 13, 2;

%e 1, 218, 208, 78, 6, 1;

%e 1, 11506, 21172, 20262, 9560, 2593, 408, 32, 2;

%e ...

%Y Cf. A086265.

%K nonn,tabf,more

%O 1,4

%A _Eric W. Weisstein_, Jul 14 2003

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Last modified March 28 15:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)