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.

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A308748 a(n) is the maximum number of pentagonal polyiamond divisions of an equilateral triangle of order n when tiling with the two smallest pentagonal polyiamonds.

Original entry on oeis.org

0, 0, 0, 0, 0, 0, 9, 12, 15, 18, 23, 28, 32, 38, 44, 50, 57
Offset: 1

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Author

Craig Knecht, Jun 21 2019

Keywords

Comments

The two smallest pentagonal polyiamonds contain five and six unit triangles. All internal angles are either 60, 120 or 240 degrees.
Order five and six equilateral triangle pentagonal tilings require pentagonal tiles larger than hexiamonds.

Crossrefs

Cf. A002061.
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