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!)
A182050 Number of odd primes between successive numbers of the form n*(n+1)^2/2. 0

%I #9 Apr 10 2012 11:15:50

%S 0,3,5,6,9,10,14,18,21,23,28,32,35,43,45,51,58,55,71,72,79,84,92,95,

%T 107,117,116,119,146,134,159,156,162,178,189,196,202,214,217,240,238,

%U 250,264,278,276,296,308,324,327,332,357,369,372,395,395,416,441,429,451,466,480,501

%N Number of odd primes between successive numbers of the form n*(n+1)^2/2.

%e There is no odd prime between 0 and 2. There are three odd primes between 2 and 9.

%t Join[{0}, Differences[PrimePi[Table[n (n + 1)^2/2, {n, 1, 62}]]]] (* _T. D. Noe_, Apr 09 2012 *)

%Y Cf. A006002.

%K nonn

%O 1,2

%A _Gerasimov Sergey_, Apr 08 2012

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 August 17 02:18 EDT 2024. Contains 375198 sequences. (Running on oeis4.)