This site is supported by donations to The OEIS Foundation.

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A077389 Smallest integer that is the average of n consecutive primes. 7
 2, 4, 5, 9, 79, 12, 17, 30, 261, 30, 49, 23, 71, 51, 29, 31, 37, 39, 125, 56, 95, 52, 38, 133, 157, 113, 353, 70, 347, 89, 111, 139, 179, 187, 281, 124, 137, 95, 347, 100, 153, 105, 491, 273, 185, 177, 377, 199, 599, 1032, 149, 274, 110, 200, 485, 251, 155, 315 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Zak Seidov, Table of n, a(n) for n = 1..1000 FORMULA a(n) = A077388(n)/n EXAMPLE a(5) = 79 because the average of the 5 consecutive primes 71, 73, 79, 83, and 89 is 79, and this is the smallest such set: for example, the average of 7, 11, 13, 17, and 19 is 13.4, which is not an integer. MATHEMATICA f[n_] := Block[{k = 1, t}, While[t = Table[Prime[i], {i, k, k + n - 1}]; Mod[Plus @@ t, n] > 0, k++ ]; t]; Mean /@ Table[f[n], {n, 58}] (* Ray Chandler, Oct 09 2006 *) CROSSREFS Cf. A054892, A077388, A082592, A122820. Sequence in context: A279786 A255515 A067298 * A122991 A245512 A232616 Adjacent sequences:  A077386 A077387 A077388 * A077390 A077391 A077392 KEYWORD nonn AUTHOR Amarnath Murthy, Nov 06 2002 EXTENSIONS More terms from Sascha Kurz, Jan 30 2003 Change to definition based on comment by Zak Seidov, Mar 20 2013 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.

Last modified January 17 18:48 EST 2019. Contains 319251 sequences. (Running on oeis4.)