%I #11 Jun 24 2014 01:08:34
%S 4,8,14,23,35,50,65,86,104,122,143,164,185,194,212,233,254,275,296,
%T 329,383,425,446,491,545,584,608,629,650,734,815,824,842,869,950,1025,
%U 1040,1055,1076,1121,1190,1253,1283,1295,1310,1373,1439,1466,1484,1547,1613
%N Let f(n)=A001359(n) be the smaller member of the n-th pair of twin primes. Then a(n) is the average of f(n) and f(n+1).
%C Average of two consecutive lesser of twin primes. - Juri-Stepan Gerasimov, Aug 26 2011.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/TwinPrimes.html">Twin Primes</a>
%t s=Select[Range[2000], PrimeQ[ # ]&&PrimeQ[ #+2]&]; (Drop[s, 1]+Drop[s, -1])/2
%Y Cf. A001359, A079329.
%K nonn
%O 1,1
%A Vincenzo Origlio (vincenzo.origlio(AT)itc.cnr.it), Feb 13 2003
%E Edited by _Dean Hickerson_, Feb 14 2003