A089455 Number of n-celled polyominoes with exactly 3 holes.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 69, 798, 7021, 51775, 339958, 2053872, 11665593, 63192945, 329798278, 1670466031, 8256762365, 39992202198, 190431003084, 893726550231

Offset

1,14

Links

Table of n, a(n) for n=1..28.

Tomás Oliveira e Silva, Animal enumerations on the {4,4} Euclidean tiling

Crossrefs

Cf. A001419, A057418, A089454, A089456, A089457, A089458.

Sequence in context: A166806 A219070 A086223 * A012201 A284058 A012096

Adjacent sequences: A089452 A089453 A089454 * A089456 A089457 A089458

Keyword

hard,more,nonn

Author

Joseph Myers, Nov 04 2003

Extensions

a(27)-a(28) from Tomás Oliveira e Silva's page added by Andrei Zabolotskii, Sep 15 2025

Status

approved