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A107636 Lesser prime in pair prime(k) +/- k for some k. 1
3, 7, 43, 139, 251, 683, 1549, 2273, 2393, 2731, 3217, 3529, 3943, 4339, 4723, 4799, 4909, 5531, 5801, 7907, 9421, 10009, 11549, 12263, 12791, 13441, 14011, 14683, 15559, 18089, 19087, 20921, 22271, 22391, 23279, 24001, 24107, 24767, 24809, 26681, 26861, 27793 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) = prime(A064403(n)) - A064403(n).
EXAMPLE
a(1) = 3 because A064403(1) = 4 and prime(4) - 4 = 7 - 4 = 3.
MATHEMATICA
R=3000; L=Select[Range[R], AllTrue[Prime[#]+{#, -#}, PrimeQ]&]; Prime/@L-L (* James C. McMahon, Feb 18 2024 *)
CROSSREFS
Cf. A064403 (values of k), A107637, A143794 (prime(k)).
Sequence in context: A282178 A101208 A050633 * A303160 A258435 A074268
KEYWORD
nonn
AUTHOR
Zak Seidov, May 19 2005
STATUS
approved

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Last modified June 13 05:35 EDT 2024. Contains 373366 sequences. (Running on oeis4.)