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).

13, 139, 6091, 19843, 51787, 55793, 113143, 179029, 205157, 302551, 346361, 460949, 895799, 970447, 1150651, 1180847, 1697257, 1929553, 2334781, 2580631, 2797447, 3056561, 3086009, 3416717, 3598943, 4024667, 4026107, 4067123, 4077583, 4389503, 4541083, 4790503

Offset

1,1

Links

Table of n, a(n) for n=1..32.

Formula

Primes p = prime(k) = A000040(k) such that A359440(k+4) >= 4. - Peter Munn, Jan 13 2023

Example

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

Mathematica

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} ]

Crossrefs

Cf. A000040, A022885, A064101, A359440.

Sequence in context: A193708 A195464 A365999 * A266630 A186506 A051639

Adjacent sequences: A064100 A064101 A064102 * A064104 A064105 A064106

Keyword

easy,nonn

Author

Robert G. Wilson v, Sep 17 2001

Extensions

More terms from Sean A. Irvine, Jun 11 2023

Status

approved