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 A092733 Sum of two consecutive primes of the form 2^x+1 (including Fermat primes and 2). 0
 5, 8, 22, 274, 65794 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(1) = [2^0+1] + [2^(2^0)+1] a(2) = [2^(2^0)+1] + [2^(2^1)+1] a(3) = [2^(2^1)+1] + [2^(2^2)+1] a(4) = [2^(2^2)+1] + [2^(2^3)+1] a(5) = [2^(2^3)+1] + [2^(2^4)+1] MATHEMATICA Total/@Partition[Select[2^Range[0, 50]+1, PrimeQ], 2, 1] (* Harvey P. Dale, Jun 21 2021 *) CROSSREFS Cf. A092506, A019434, A063897. Sequence in context: A120042 A120043 A063897 * A116884 A192651 A105963 Adjacent sequences: A092730 A092731 A092732 * A092734 A092735 A092736 KEYWORD nonn,more AUTHOR Jorge Coveiro, Apr 12 2004 EXTENSIONS Offset corrected by Arkadiusz Wesolowski, Oct 22 2011 STATUS approved

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Last modified December 9 23:05 EST 2022. Contains 358710 sequences. (Running on oeis4.)