The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A225804

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A225804

Arithmetic mean of the first n primes, rounded up.
(history; published version)

#18 by Charles R Greathouse IV at Mon Apr 03 10:36:13 EDT 2023

LINKS

Chris K. Caldwell and G. L. Honaker,Jr.,<a href="httphttps://primes.utmt5k.eduorg/curios/page.php?short=110"> Prime Curios! 110</a>

Discussion

Mon Apr 03

10:36

OEIS Server: https://oeis.org/edit/global/2966

#17 by T. D. Noe at Sun Jul 28 20:51:21 EDT 2013

STATUS

reviewed

approved

#16 by Alonso del Arte at Sun Jul 28 20:27:53 EDT 2013

STATUS

proposed

reviewed

#15 by Alonso del Arte at Sun Jul 28 20:25:16 EDT 2013

STATUS

editing

proposed

#14 by Alonso del Arte at Sun Jul 28 20:24:43 EDT 2013

EXAMPLE

a(65) = ceilceiling( (2 + 3 + 5 + 7 + 11+13)/65) = ceilceiling(4128/5) = 6)=7.

a(6) = ceiling( (2 + 3 + 5 + 7 + 11 + 13)/6) = ceiling(41/6) = 7.

a(7) = ceiling( (2 + 3 + 5 + 7 + 11 + 13 + 17)/7) = ceiling(58/7) = 9.

KEYWORD

nonn,changed,easy

#13 by Alonso del Arte at Sun Jul 28 20:21:07 EDT 2013

MATHEMATICA

Table[Ceiling[(Plus@@Prime[Range[n]])/n], {n, 75}] (* Alonso del Arte, Jul 28 2013 *)

STATUS

proposed

editing

#12 by K. D. Bajpai at Sun Jul 28 12:24:58 EDT 2013

STATUS

editing

proposed

#11 by K. D. Bajpai at Sun Jul 28 12:24:05 EDT 2013

LINKS

Chris K. Caldwell and G. L. Honaker,Jr.,<a href="http://primes.utm.edu/curios/page.php?short=110"> Prime Curios! 110</a>

STATUS

reviewed

editing

#10 by R. J. Mathar at Sun Jul 28 11:21:53 EDT 2013

STATUS

proposed

reviewed

#9 by R. J. Mathar at Sun Jul 28 11:21:34 EDT 2013

STATUS

editing

proposed