A335752 The lexicographically earliest sequence of primes, each two of which sum to a triprime (A014612).

3, 5, 47, 239, 3023, 27983, 53231, 118343, 198959, 452831, 580871, 9364871, 26386463, 67876751, 662675543, 2952903983, 22614861263

Offset

1,1

Links

Table of n, a(n) for n=1..17.

Example

3 + 5 = 8 = 2*2*2, 3 + 47 = 50 = 2*5*5, 5 + 47 = 52 = 2*2*13.

Mathematica

ps = {3};  Do[p = NextPrime[ps[[-1]]]; While[! AllTrue[ps + p, PrimeOmega[#] == 3 &], p = NextPrime[p]]; AppendTo[ps, p], {10}]; ps (* Amiram Eldar, Jul 22 2020 *)

Crossrefs

Cf. A000040, A014612, A113875.

Sequence in context: A352088 A307632 A227743 * A343768 A235356 A347593

Adjacent sequences: A335749 A335750 A335751 * A335753 A335754 A335755

Keyword

nonn,more

Author

Zak Seidov, Jul 19 2020

Extensions

a(17) from Amiram Eldar, Jul 22 2020

Name edited by Jon E. Schoenfield, Oct 04 2021

Status

approved