A337545 a(n) is the number of pentagons at distance n from the central pentagon of a pentaflake.

1, 5, 10, 5, 15, 20, 10, 30, 15, 15, 20, 50, 25, 25, 50, 30, 50, 40, 80, 35, 65, 30, 30, 45, 55, 40, 40, 80, 140, 30, 90, 55, 35, 80, 80, 55, 65, 150, 60, 100, 90, 110, 80, 140, 100, 70, 120, 210, 70, 170, 105, 125, 100, 180, 45, 55, 90, 60, 80, 110, 105, 65

Offset: 0

Author

Rémy Sigrist, Nov 22 2020

Keywords

• nonn

Comments

For symmetry reasons, a(n) is a multiple of 5 for any n > 0.

Links

• Rémy Sigrist, Table of n, a(n) for n = 0..1529
• Rémy Sigrist, Illustration of initial terms
• Rémy Sigrist, C# program for A337545
• Wikipedia, Pentaflake

Crossrefs

See A337018 for similar sequences.