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.

A121286 Number of catacondensed hexagonal systems with n hexagons.

Original entry on oeis.org

1, 3, 9, 26, 72, 192, 496, 1248, 3072, 7424, 17664, 41472, 96256, 221184, 503808, 1130496, 2555904, 5701632
Offset: 1

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Author

Parthasarathy Nambi, Sep 06 2006

Keywords

Comments

This is the erroneous version published by Tosic et al. The correct sequence is in A072863. - R. J. Mathar, May 21 2018