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A064103 Primes p = p(k) such that p(k) + p(k+9) = p(k+1) + p(k+8) = p(k+2) + p(k+7) = p(k+3) + p(k+6) = p(k+4) + p(k+5). 0

%I

%S 13,139,6091,19843,51787,55793,113143,179029,205157,302551,346361,

%T 460949,895799,970447,1150651,1180847,1697257,1929553,2334781,2580631,

%U 2797447,3056561,3086009,3416717,3598943,4024667,4026107,4067123

%N Primes p = p(k) such that p(k) + p(k+9) = p(k+1) + p(k+8) = p(k+2) + p(k+7) = p(k+3) + p(k+6) = p(k+4) + p(k+5).

%e 13 + 47 = 17 + 43 = 19 + 41 = 23 + 37 = 29 + 31.

%t a = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; Do[ a = Delete[ a, 1 ]; a = Append[ a, Prime[ n ] ]; If[ a[ [ 1 ] ] + a[ [ 10 ] ] == a[ [ 2 ] ] + a[ [ 9 ] ] == a[ [ 3 ] ] + a[ [ 8 ] ] == a[ [ 4 ] ] + a[ [ 7 ] ] == a[ [ 5 ] ] + a[ [ 6 ] ], Print[ a[ [ 1 ] ] ] ], {n, 1, 3 10^5} ]

%Y Cf. A022885.

%K easy,nonn

%O 1,1

%A _Robert G. Wilson v_, Sep 17 2001

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Last modified September 18 09:59 EDT 2019. Contains 327170 sequences. (Running on oeis4.)