OFFSET
1,6
LINKS
T. D. Noe, Table of n, a(n) for n=1..10000
EXAMPLE
a(8)= 4 because between the 8th and 9th pairs of twins there are 4 primes: (71,73) 79 83 89 97 (101,103).
MATHEMATICA
t1=Select[Prime[Range[3, 542]], PrimeQ[#+2]&]; Prepend[Table[PrimePi[t1[[i+1]]]-PrimePi[t1[[i]]]-2, {i, 1, Length[t1]-1}], 0] (* Jayanta Basu, May 26 2013 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Den Roussel (DenRoussel(AT)webtv.net)
EXTENSIONS
Corrected and extended by Labos Elemer, Mar 23 2000
STATUS
approved