A092244 - OEIS

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A092244

Numbers n such that 2^n-th prime + 2^(n-1)-th prime + 1 is prime.

11, 73, 443, 1031, 2339, 11833, 56737, 122891, 5423669 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	EXAMPLE	`prime(2^2)+prime(2^1) + 1 = 11 = prime.`
	PROG	`(PARI) f(n)= for(x=1, n, y=prime(2^x)+ prime(2^(x-1))+1; if(isprime(y), print1(y", ")))`
	CROSSREFS	`Sequence in context: A142015 A123039 A163775 * A155634 A003367 A121784` `Adjacent sequences: A092241 A092242 A092243 * A092245 A092246 A092247`
	KEYWORD	`hard,nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Feb 20 2004`

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Last modified February 16 14:07 EST 2012. Contains 205930 sequences.