How many great grandparents do we have?

Based on the fact that there are twenty two generations between myself and King Edward I, I have 16,777,216 great-grandparents (paternal and maternal).

• Parents 2

• Grandparents 4

• Great-Grandparents 8

• 2nd Great-Grandparents 16

• 3rd Great-Grandparents 32

• 4th Great- Grandparents 64

• 5th Great-Grandparents 128

• 6th Great-Grandparents 256

• 7th Great-Grandparents 512

• 8th Great-Grandparents 1,024

• 9th Great-Grandparents 2,048

• 10th Great-Grandparents 4,096

• 11th Great-Grandparents 8,192

• 12th Great-Grandparents 16,384

• 13th Great-Grandparents 32,768

• 14th Great-Grandparents 65,536

• 15th Great-Grandparents 131,072

• 16th Great-Grandparents 262,144

• 17th Great-Grandparents 524,288

• 18th Great-Grandparents 1,048,576

• 19th Great-Grandparents 2,097,152

• 20th Great-Grandparents 4,194,304

• 21st Great-Grandparents 8,388,608

• 22nd Great-Grandparents 16,777,216