|
Search: id:A059960
|
|
|
| A059960 |
|
Smaller term of a pair of twin primes such that prime factors of their average are only 2 and 3. |
|
+0
17
|
|
| 5, 11, 17, 71, 107, 191, 431, 1151, 2591, 139967, 472391, 786431, 995327, 57395627, 63700991, 169869311, 4076863487, 10871635967, 2348273369087, 56358560858111, 79164837199871, 84537841287167, 150289495621631
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
Primes p(k) such that the number of distinct prime divisors of all composite numbers between p(k) and p(k+1) is 2. - Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 26 2002
|
|
FORMULA
|
Primes p such that p+p+2=2p+2=(2^u)*(3^w)
|
|
EXAMPLE
|
a(11)+1=2*2*2*3*3*3*3*3*3*3*3*3*3=472392.
|
|
CROSSREFS
|
Cf. A014574, A002822, A033845, A058383, A059961.
Cf. A052297, A075581, A075580, A075583, A075584, A075585, A075586, A075587, A075588, A075589.
Apart from initial terms, same as A078883.
Sequence in context: A050836 A058019 A075582 this_sequence A118122 A166039 A145005
Adjacent sequences: A059957 A059958 A059959 this_sequence A059961 A059962 A059963
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Labos E. (labos(AT)ana.sote.hu), Mar 02 2001
|
|
|
Search completed in 0.002 seconds
|
