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A137627 Semiprimes (p+4) associated with first prime in A137625. 3
6, 33, 177, 713, 1745, 8301, 8301, 19217, 175233, 175233, 33952613, 4377722627, 4377722627, 1242030992177, 1242030992177 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Some terms may overlap: e.g., k=9 and k=10 both begin with p=175229 where p+4 = 175233.
LINKS
FORMULA
For each p, the semiprime is p+4.
EXAMPLE
a(2)=33 because if p=29, then p+4 is 33 and semiprime (3*11).
CROSSREFS
Sequence in context: A094165 A111994 A092851 * A138395 A050151 A009162
KEYWORD
more,nonn
AUTHOR
Enoch Haga, Jan 30 2008
EXTENSIONS
a(1) corrected by and a(11)-a(15) from Giovanni Resta, Jun 22 2018
STATUS
approved

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Last modified July 16 08:10 EDT 2024. Contains 374345 sequences. (Running on oeis4.)