OFFSET
1,1
COMMENTS
a(32) > 8040423200947.
LINKS
Lucas A. Brown, Table of n, a(n) for n = 1..31
Lucas A. Brown, semiprimemods.py.
EXAMPLE
The 1st semiprime is 4, which is congruent to 5 (mod 1), so 4 is in the sequence.
The 2nd semiprime is 6, which is not congruent to 5 (mod 6), so 6 is not in the sequence.
The 60th semiprime is 185, which is congruent to 5 (mod 60), so 185 is in the sequence.
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
Lucas A. Brown, Oct 14 2022
STATUS
approved