A226719 a(n) = the first member of a twin prime pair whose sum equals the sums of n consecutive pairs of twin primes.
3, 17, 59, 101, 107, 521, 239, 569, 881, 1427, 1091, 1289, 1301, 3167, 2027, 2309, 8837, 2969, 3389, 3821, 4787, 13679, 23909, 27407, 10889, 7877, 14627, 16631, 21011, 13997, 17027, 20441, 12107, 26711, 36467, 36779, 38567, 32909, 27479, 18521, 19751, 32057, 48479
Offset: 1
Keywords
Examples
a(1) = 3 because 3 + 5 = 3 + 5 (trivial case) a(2) = 17 = A225943(1) a(3) = 59 = A226692(1) a(4) = 101 because 101 + 103 = (11 + 13) + (17 + 19) + (29 + 31) + (41 + 43) a(5) = 107 because 107 + 109 = (5 + 7) + (11 + 13) + (17 + 19) + (29 + 31) + (41 + 43)
Links
- Zak Seidov, Table of n, a(n) for n = 1..1000
Programs
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Mathematica
n = 1; t = {}; While[d = Intersection[s, Total /@ Partition[s, n, 1]]; Length[d] > 0, AppendTo[t, d[[1]] - 1]; n++]; t (* T. D. Noe, Jun 17 2013 *)
Comments