login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A247549 Numbers n for which A242720(n) = prime(n)*(prime(n)+8)+3. 0

%I #8 Sep 23 2014 11:14:49

%S 5,32,43,79,126,142,523,576,722,771,1026,1152,1234,1402,1442,1480,

%T 1623,1630,1767,1814,1829,1962,1995,2062,2084,2353,2705,3104,3174,

%U 3355,3588,3718,4005,4035,4126,4266,4581,4616,4785,4854,4859,5068,5131,5145,5164

%N Numbers n for which A242720(n) = prime(n)*(prime(n)+8)+3.

%C prime(n)*(prime(n)+8) + 3, such that prime(n)+8 and prime(n)*(prime(n)+8)+2 are primes, is the third minimal possible value of A242720(n) after (prime(n)+1)^2 + 2, n>=3 (cf. A246824) and prime(n)*(prime(n)+4) + 3 (cf. A247280).

%F If n is in the sequence, then prime(n) == 1 (mod 10), A242720(n) == 12 (mod 100).

%Y Cf. A242719, A242720, A242847, A245363, A246748, A246824, A247011, A147280.

%K nonn

%O 1,1

%A _Vladimir Shevelev_, Sep 19 2014

%E More terms from _Peter J. C. Moses_, Sep 19 2014

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)