Crossword Heaven

Answer: FIBONACCI

FIBONACCI is a crossword puzzle answer that we have spotted 5 times.

• Eponymous Italian mathematician
• Eponym of a number series that begins 1, 1, 2, 3, 5, 8, ...
• Like the two 40-Across in the grid for this answer
• Eponym for a mathematical pattern identified centuries earlier in India
• Mathematician behind the sequence 1, 1, 2, 3. 5...