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A161763
Product of the two primes with indices equal to the members of the n-th twin prime pair.
0
55, 187, 1271, 3953, 13843, 34189, 78391, 129551, 307961, 351613, 616081, 753343, 1155481, 1350163, 1461617, 2073551, 2282977, 2999743, 3367081, 4293103, 5503691, 8427373, 9060019, 10751441, 14039813, 17164349, 19439137, 20775283, 22781333
OFFSET
1,1
FORMULA
EXAMPLE
prime(3)*prime(5)=55. prime(5)*prime(7) = 187. prime(11)*prime(13)=1271. prime(17)*prime(19)=3953.
MATHEMATICA
Prime[First[#]] Prime[Last[#]]&/@Select[Partition[Prime[Range[200]], 2, 1], Last[#]-First[#]==2&] (* Harvey P. Dale, Feb 22 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
Corrected by R. J. Mathar, Oct 21 2009
STATUS
approved