A242129 Number of tiles added in each step if a centrally symmetric Penrose rhomb tiling, beginning with a central 'Sun' configuration, is successively extended in steps as defined below.

5, 5, 10, 15, 20, 25, 40, 30, 30, 45, 60, 55, 65, 55, 70, 75, 90, 75, 90

Offset: 1

Author

Felix Fröhlich, May 05 2014

Keywords

• nonn
• more

Comments

In each step, add a new tile to each free edge of the current tiling. The first step is the placement of the five central tiles.

Examples

			See illustrations in Fröhlich, 2019.
		

Links

• David Austin, Penrose tiles talk across miles, AMS Feature Column, August 2005.
• Felix Fröhlich, Layers in the Penrose rhomb tiling with a "Sun" patch as a center of global fivefold rotational symmetry, 2019.
• Wikipedia, Penrose tiling

Crossrefs

Cf. A242128 (5-fold, Star), A242888 (7-fold, Star), A242889 (7-fold, Sun), A242890 (8-fold, Star), A242891 (8-fold, Sun), A242892 (9-fold, Star), A242893 (9-fold, Sun), A242894 (Kite and dart, Star), A242895 (Kite and dart, Sun).

Extensions

a(8)-a(19) from Felix Fröhlich, Jun 16 2019