OFFSET
1,1
COMMENTS
All terms are divisible by two. Except for the first term, all terms are divisible by three.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
Eric Weisstein's World of Mathematics, Cousin Primes
Wikipedia, Cousin Prime
EXAMPLE
The sum of the cousin primes 223 and 227 is 450.
MATHEMATICA
2Select[Prime[Range[200]], PrimeQ[# + 4] &] + 4 (* Alonso del Arte, Feb 01 2013 *)
Join[{10}, Total/@Select[Partition[Prime[Range[300]], 2, 1], #[[2]]-#[[1]] == 4&]] (* Harvey P. Dale, Apr 12 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Parthasarathy Nambi, Nov 07 2009
STATUS
approved