OFFSET
1,1
COMMENTS
Call d(i)=p(i+2)-p(i+1) and dd(i)=d(i+1)-d(i) then dd(i)=0.
All related first differences are multiples of 6 except the first one, which is 2.
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
FORMULA
EXAMPLE
a(7)=269 since d(269,263)=6 and d(263,257)=6 and their difference is 0.
MATHEMATICA
Select[Partition[Prime[Range[750]], 3, 1], Length[Union[Differences[#]]]==1&][[;; , 3]] (* Harvey P. Dale, Oct 09 2023 *)
PROG
(Haskell)
a181424 = a000040 . (+ 2) . a064113 -- Reinhard Zumkeller, Jan 20 2012
CROSSREFS
KEYWORD
nonn
AUTHOR
Carmine Suriano, Oct 18 2010
STATUS
approved