OFFSET
1,1
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..10000
MATHEMATICA
Differences@ Prime@ Flatten@ Position[Differences@ Prime@ Range[3000], 20] (* Michael De Vlieger, Aug 16 2017 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Mar 06 2000
STATUS
approved