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Cf. A107637 Larger prime in pair prime(n) +/- n for some n; A064403 Prime(n) + n and prime(n) - n are both primes.
Table of n, a(n) for n=1..37.
a(n) = prime(A064403(n)) - A064403(n)
a(1) = 3 because A064403(1) = 4 and prime(4) - 4 = 7 - 4 = 3
Cf. A064403, A107637.
Sequence in context: A236476 A101208 A050633 * A258435 A074268 A019026
Adjacent sequences: A107633 A107634 A107635 * A107637 A107638 A107639
Zak Seidov, May 19 2005