

A096710


Quadruply balanced primes: primes which are averages of their immediate neighbor primes, their second neighbor primes, their third neighbor primes and their fourth neighbor primes.


9



98303927, 580868459, 784857323, 857636141, 909894647, 951508837, 1367470823, 1480028171, 1850590099, 2106973159, 2121382079, 2409718043, 2635873907, 2704854637, 3225527099, 3386231579, 3823510039, 3824915671, 3905211517, 4123167667, 4127991383, 4386448117
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OFFSET

1,1


LINKS

Donovan Johnson, Table of n, a(n) for n = 1..1000


EXAMPLE

98303927 is a member because 98303927 = (98303903 + 98303951)/2 = (98303897 + 98303957)/2 = (98303873 + 98303981)/2 = (98303867 + 98303987)/2.


MATHEMATICA

a = {}; Do[p = 2Prime[n]; If[p == Prime[n  1] + Prime[n + 1], If[ p == Prime[n  2] + Prime[n + 2], If[p == Prime[n  3] + Prime[n + 3], If[p == Prime[n  4] + Prime[n + 4], Print[p/2]; AppendTo[a, p/2]]]]], {n, 6, 117039731}]; a
Select[Partition[Prime[Range[207405000]], 9, 1], (#[[1]]+#[[9]])/2 == (#[[2]]+ #[[8]])/2 == (#[[3]]+#[[7]])/2==(#[[4]]+#[[6]])/2==#[[5]]&][[All, 5]] (* Harvey P. Dale, Dec 27 2018 *)


CROSSREFS

Cf. A006562, A051795, A096709, A055380.
Sequence in context: A214559 A326183 A184151 * A322682 A322692 A322683
Adjacent sequences: A096707 A096708 A096709 * A096711 A096712 A096713


KEYWORD

nonn


AUTHOR

Robert G. Wilson v, Jun 28 2004


EXTENSIONS

More terms from Jud McCranie, Sep 29 2006


STATUS

approved



