OFFSET
1,1
COMMENTS
For odd years, if a man is born on an odd year, his not being able to celebrate his prime birthday on a prime year is equivalent to the year of birth being an odd composite minus 2: A007921 Numbers that are not the difference of two primes.
CROSSREFS
KEYWORD
nonn
AUTHOR
Tanya Khovanova, Dec 22 2006
STATUS
approved