Galleries of Visualizations about Golden Ratio, Silver Ratio, Bronze Ratio,
Original Metallic Ratios, Similar Metallic Ratios,
and These Equiangular Spirals (Logarithmic Spirals)
based on Pythagorean Theorem, Binomial Theorem, Addition theorem, Addition theorem,
and knight's moving types or skipped Generalized Fibonacci or Lucas Sequences
with Pell or Jacobsthal Sequence
Shingo Nakanishi (Osaka Institute of Technology),
"Visualizations and Geometric Characterizations of Equiangular Spirals about Similar Metallic Ratios Using Generalized Fibonacci Sequences, Pythagorean Theorem, and Binomial Theorem", Personal research note in Japanese, (2021.12.03)