OFFSET
1,4
REFERENCES
See A059862 for references.
Steven R. Finch, Mathematical Constants, Cambridge, 2003, pp. 84-94.
LINKS
C. K. Caldwell, Prime k-tuple Conjecture
Steven R. Finch, Hardy-Littlewood Constants [Broken link]
Steven R. Finch, Hardy-Littlewood Constants [From the Wayback machine]
G. Niklasch, Some number theoretical constants: 1000-digit values [Cached copy]
PROG
(PARI) a(n) = prod(i=3, n, prime(i)-4); \\ Michel Marcus, Aug 25 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Feb 28 2001
EXTENSIONS
More terms from Michel Marcus, Aug 25 2019
STATUS
approved