A094743 - OEIS

A094743

Beginning with 2, increasing primes such that the sum of successive differences is also prime.

2, 5, 7, 13, 19, 31, 43, 61, 73, 103, 109, 139, 151, 181, 193, 199, 229, 241, 271, 283, 313, 349, 421, 433, 463, 523, 571, 601, 619, 643, 661, 811, 823, 829, 859, 883, 1021, 1033, 1051, 1063, 1093, 1153, 1231, 1279, 1291, 1303, 1321, 1429, 1453, 1483, 1489

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

2 along with the larger member of twin primes.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

f[s_List] := Block[{p = NextPrime@ s[[ -1]]}, While[ !PrimeQ[p - 2], p = NextPrime@p]; Append[s, p]]; Nest[f, {2}, 50] (* Robert G. Wilson v, Aug 09 2010 *)

PROG

(PARI) list(lim)=my(v=List([2]), s, p=2); forprime(q=5, lim, if(isprime(s+q-p), listput(v, q); s+=q-p; p=q)); Vec(v) \\ Charles R Greathouse IV, Jan 12 2022

CROSSREFS

Cf. A006512, A094744.

Sequence in context: A038959 A069351 A275011 * A175075 A262392 A056985

Adjacent sequences: A094740 A094741 A094742 * A094744 A094745 A094746

KEYWORD

nonn

AUTHOR

Amarnath Murthy, May 24 2004

EXTENSIONS

Changed offset from 0 to 1 by Vincenzo Librandi, Apr 14 2013

STATUS

approved