

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
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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

Table of n, a(n) for n=1..15.


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

Cf. A001358, A137625, A137626, A137628.
Sequence in context: A094165 A111994 A092851 * A138395 A050151 A009162
Adjacent sequences: A137624 A137625 A137626 * A137628 A137629 A137630


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



