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A088460 Lower twin primes with lower twin prime index. 3
11, 29, 137, 239, 641, 1151, 1931, 2339, 3851, 4091, 5639, 6359, 8231, 9011, 9431, 11351, 12161, 14561, 15731, 17837, 20441, 25931, 26951, 29207, 33767, 37781, 40847, 42407, 44381, 46439, 59471, 60917, 61979, 65171, 67427, 80831, 81929 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..177 from Zak Seidov)

FORMULA

a(n) = A001359(A001359(n)).

a(n) == 5 (mod 6).

EXAMPLE

n=1 -> A001359(1)=3 -> A001359(3) = 11 = a(1).

n=2 -> A001359(2)=5 -> A001359(5) = 29 = a(2).

n=3 -> A001359(3)=11 -> A001359(11) = 137 = a(3).

PROG

(PARI) a(k) = { for(x1=1, k, print1(twinl(twinl(x1))", ") ) }

twinl(n) = { c=0; x=1; while(c<n, if(isprime(prime(x)+2), c++); x++; ); return(prime(x-1)) }

CROSSREFS

Cf. A001359, A088463, A007097.

Sequence in context: A216559 A099911 A118638 * A168171 A249993 A080083

Adjacent sequences:  A088457 A088458 A088459 * A088461 A088462 A088463

KEYWORD

nonn

AUTHOR

Cino Hilliard, Nov 12 2003

EXTENSIONS

Edited and corrected by David W. Wilson, Oct 29 2006

Additional comments from R. J. Mathar, Oct 29 2006

STATUS

approved

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Last modified April 4 08:58 EDT 2020. Contains 333213 sequences. (Running on oeis4.)