A333977 Prime starting a sequence of 20 consecutive primes with symmetrical gaps about the center.

1797595814863, 2375065608481, 4465545586753, 21818228348093, 67696772430071, 82116093014611, 155947272322087, 161980267642951, 169560139541641, 202619277419161, 285719200081877, 299828814652799, 314942862282899, 365706921997577

Offset

1,1

Links

Table of n, a(n) for n=1..14.

Tomáš Brada, Natalia Makarova, Symmetric Prime Tuples project

Natalia Makarova, About Stop@home project

Natalia Makarova and Carlos Rivera, Problem 62. Symmetric k-tuples of consecutive primes, The Prime Puzzles and Problems Connection.

Formula

Primes p = prime(k) = A000040(k) such that A359440(k+9) >= 9. - Peter Munn, Jan 09 2023

Crossrefs

Cf. A000040, A055381, A055382, A064101, A081235, A175309, A335044, A335394, A336967, A336968, A359440.

Sequence in context: A289148 A282182 A017543 * A233609 A233601 A233850

Adjacent sequences: A333974 A333975 A333976 * A333978 A333979 A333980

Keyword

nonn

Author

Tomáš Brada, Sep 20 2020

Status

approved