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A096478 a(n) = A000040(A096477(n)), i.e., prime(a(n)) and prime(1 + a(n)) are twin primes. 4
2, 3, 5, 7, 13, 17, 41, 43, 83, 89, 109, 113, 173, 277, 307, 313, 353, 373, 463, 563, 577, 601, 613, 643, 673, 719, 743, 1117, 1123, 1171, 1279, 1571, 1621, 1627, 1709, 1741, 1823, 1867, 1907, 1949, 1979, 1987, 1999, 2003, 2063, 2099, 2153, 2287, 2309, 2311 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Gives primes in A029707. - Pierre CAMI, Apr 20 2006

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

EXAMPLE

n=10: a(10) = 89 means that prime(1 + 89) - prime(89) = 463 - 461 = 2; prime with subscript 89 (which is prime) and the next prime (i.e., prime(90)) are twin primes.

MATHEMATICA

Prime[Flatten[Position[Table[Prime[Prime[n]+1]-Prime[Prime[n]], {n, 1, 1000}], 2]]]

CROSSREFS

Cf. A006450, A072677, A073124, A096477.

Cf. A029707, A000720.

Sequence in context: A051026 A028865 A053435 * A076047 A245640 A178766

Adjacent sequences:  A096475 A096476 A096477 * A096479 A096480 A096481

KEYWORD

nonn

AUTHOR

Labos Elemer, Jun 23 2004

STATUS

approved

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Last modified September 19 15:24 EDT 2019. Contains 327198 sequences. (Running on oeis4.)