cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-4 of 4 results.

A089454 Number of n-celled polyominoes with exactly 2 holes.

Original entry on oeis.org

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 41, 346, 2384, 14560, 81863, 433172, 2192752, 10726252, 51094203, 238259280, 1092053068, 4934652298, 22034767837, 97407519119, 426916828181
Offset: 1

Views

Author

Joseph Myers, Nov 04 2003

Keywords

Links

Crossrefs

Cf. A001419, A057418, A089455, A089456, A089457, A089458.

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

Original entry on oeis.org

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
Offset: 1

Views

Author

Joseph Myers, Nov 04 2003

Keywords

Links

Crossrefs

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

A089456 Number of n-celled polyominoes with exactly 4 holes.

Original entry on oeis.org

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 179, 2509, 25609, 214932, 1578984, 10536260, 65411645, 383981499, 2156114468
Offset: 1

Views

Author

Joseph Myers, Nov 04 2003

Keywords

Links

Crossrefs

Cf. A001419, A057418, A089454, A089455, A089457, A089458.

A089458 Number of n-celled polyominoes with exactly 6 holes.

Original entry on oeis.org

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 2131, 38022, 480713, 4872679, 42360239
Offset: 1

Views

Author

Joseph Myers, Nov 04 2003

Keywords

Links

Crossrefs

Cf. A001419, A000104, A057418, A089454, A089455, A089456, A089457.

Extensions

a(27)-a(28) from Tomás Oliveira e Silva's page added by Andrey Zabolotskiy, Oct 02 2022
Showing 1-4 of 4 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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