74901: OOIOOIOOIOOIOOIOIOI
74917: OOIOOIOOIOOIOIOOIOI
75045: OOIOOIOOIOIOOIOOIOI
- 'O' = An ordinary (12-month) year
- 'I' = An intercalary (13-month) year
The integers are decimal representation of the cycle if it were a binary number where O = 0 and I = 1