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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

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