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!)
A075518 a(n) = floor(prime(n)/4). 3
0, 0, 1, 1, 2, 3, 4, 4, 5, 7, 7, 9, 10, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 25, 25, 26, 27, 28, 31, 32, 34, 34, 37, 37, 39, 40, 41, 43, 44, 45, 47, 48, 49, 49, 52, 55, 56, 57, 58, 59, 60, 62, 64, 65, 67, 67, 69, 70, 70, 73, 76, 77, 78, 79, 82, 84, 86, 87, 88, 89, 91 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

a(n)*4 + A039702(n) = A000040(n).

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

MATHEMATICA

Floor[Prime[Range[80]]/4] (* Harvey P. Dale, Dec 27 2011 *)

PROG

(PARI) a(n) = prime(n) \ 4; \\ Joerg Arndt, Aug 04 2013

(Haskell)

a075518 = (`div` 4) . a000040  -- Reinhard Zumkeller, Oct 10 2013

CROSSREFS

Cf. A075519.

Sequence in context: A330264 A036416 A084618 * A226429 A036820 A017829

Adjacent sequences:  A075515 A075516 A075517 * A075519 A075520 A075521

KEYWORD

nonn,easy

AUTHOR

Reinhard Zumkeller, Sep 19 2002

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 18 06:42 EST 2022. Contains 350452 sequences. (Running on oeis4.)