OFFSET
1,1
EXAMPLE
11 is a term because 11 is prime, 11+1 = 3*4 = (2+1)*(3+1), and 2 and 3 are prime.
223 is a term because 223 is prime, 223+1 = 4*4*14 = (3+1)^2*(13+1), and 3 and 13 are prime. (This is the first term that requires more than two factors, i.e., it is not a term of A066938.)
CROSSREFS
KEYWORD
nonn
AUTHOR
Pontus von Brömssen, Jun 19 2023
STATUS
approved