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A329425 For all n >= 0, six among (a(n+i) + a(n+j), 0 <= i < j < 5) are prime: lexicographically first such sequence of distinct nonnegative integers. 17
0, 1, 2, 3, 4, 9, 8, 10, 33, 14, 93, 20, 17, 23, 44, 6, 24, 35, 65, 5, 18, 32, 11, 12, 29, 30, 7, 31, 72, 16, 22, 25, 37, 15, 46, 64, 43, 28, 85, 19, 54, 13, 88, 34, 49, 39, 40, 27, 100, 57, 26, 52, 111, 21, 38, 45, 62, 41, 51, 56, 47, 116, 50, 81, 63, 68, 59, 170, 69, 71 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

The restriction to [1, oo) is the lexicographically first such sequence of positive integers. (This is rather exceptional, cf. A128280 vs A055265, A329405 vs A329450, ..., see the wiki page for more.)

Conjectured to be a permutation, i.e., all n >= 0 appear. The restriction to [1, oo) is then the lexicographically first such permutation of the positive integers.

Among pairwise sums of 5 consecutive terms, there cannot be more than 2 x 3 = 6 primes: see the wiki page for this and further considerations and variants.

LINKS

Table of n, a(n) for n=0..69.

√Čric Angelini, Prime sums from neighbouring terms, SeqFan list, and personal blog "Cinquante signes", Nov. 11, 2019.

M. F. Hasler, Prime sums from neighboring terms, OEIS wiki, Nov. 23, 2019.

PROG

(PARI) A329425_upto(N) = S(N, 6, 5, 0) \\ see the wiki page for the function S().

CROSSREFS

Cf. A055265, A128280 (1 prime from 2 terms), A329333 (1 prime from 3 terms), A329405-A329416 (N primes from M terms >= 1), A329449, ..., A329581 (N primes from M terms >= 0).

Sequence in context: A307405 A115305 A210747 * A247942 A098550 A256224

Adjacent sequences:  A329422 A329423 A329424 * A329426 A329427 A329428

KEYWORD

nonn

AUTHOR

M. F. Hasler, following an idea from Eric Angelini, Nov 24 2019

STATUS

approved

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Last modified September 26 20:36 EDT 2020. Contains 337374 sequences. (Running on oeis4.)