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A086266 Triangle of counts of s-clusters in n X n (0,1)-matrices for s=0, 1, .... 0
1, 1, 1, 13, 2, 1, 218, 208, 78, 6, 1, 1, 11506, 21172, 20262, 9560, 2593, 408, 32, 2 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..20.

Eric Weisstein's World of Mathematics, s-Cluster

EXAMPLE

1, 1; 1, 13, 2; 1, 218, 208, 78, 6, 1; 1, 11506, 21172, 20262, 9560, 2593, 408, 32, 2; ...

CROSSREFS

Cf. A086265.

Sequence in context: A281092 A010223 A010222 * A217436 A040166 A100395

Adjacent sequences:  A086263 A086264 A086265 * A086267 A086268 A086269

KEYWORD

nonn,more,tabl

AUTHOR

Eric W. Weisstein, Jul 14 2003

STATUS

approved

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Last modified October 20 15:58 EDT 2019. Contains 328267 sequences. (Running on oeis4.)