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!)
A138226 Number of triples (p,q,r) of primes with p<q<r<=prime(n), p+q>r, q+r>p and r+p>q. 1
0, 0, 0, 1, 2, 5, 9, 16, 25, 34, 48, 62, 82, 109, 142, 176, 213, 259, 308, 367, 438, 512, 598, 689, 778, 881, 1000, 1134, 1286, 1452, 1595, 1757, 1930, 2126, 2319, 2533, 2758, 2996, 3260, 3533, 3820, 4132, 4444, 4786, 5155, 5554, 5935, 6309, 6716, 7158, 7632 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Partial sums of A138225.

LINKS

Table of n, a(n) for n=1..51.

CROSSREFS

Sequence in context: A072829 A169740 A282044 * A175287 A346822 A284917

Adjacent sequences:  A138223 A138224 A138225 * A138227 A138228 A138229

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Mar 06 2008

STATUS

approved

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 May 18 23:31 EDT 2022. Contains 353826 sequences. (Running on oeis4.)