OFFSET
1,1
COMMENTS
Prime terms are balanced primes (A006562). - Zak Seidov, Mar 03 2019
a(n) = a(n+1) iff prime(n+3) - prime(n) = 2 * (prime(n+2) - prime(n+1)). It's not possible to get a(n) = a(n+1) = a(n+2). - Bernard Schott, Mar 03 2019
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
FORMULA
MATHEMATICA
Table[Prime[n] + Prime[n + 2] - Prime[n + 1], {n, 75}]
#[[1]]-#[[2]]+#[[3]]&/@Partition[Prime[Range[70]], 3, 1] (* Harvey P. Dale, Oct 28 2018 *)
PROG
(Magma) [NthPrime(n)-NthPrime(n+1)+NthPrime(n+2): n in [1..60]]; // Vincenzo Librandi, Apr 17 2015
(PARI) vector(80, n, prime(n) - prime(n+1) + prime(n+2)) \\ Michel Marcus, Apr 17 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Apr 08 2004
STATUS
approved