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.

A066331 Number of fixed hexagonal polyominoes with n cells and tree-like structure.

Original entry on oeis.org

1, 3, 9, 29, 99, 348, 1260, 4644, 17382, 65822, 251655, 969819, 3762517, 14680890, 57567228, 226712655, 896252850, 3555116583, 14144563158
Offset: 1

Views

Author

Jan Kristian Haugland, Jan 01 2002

Keywords

Links

Crossrefs

Cf. A001207 (all polyhexes), A038142 (free tree-like).

Extensions

a(16)-a(19) from Sean A. Irvine, Oct 08 2023

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

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