id:A143509 - OEIS Search Results

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First of a pair of twin primes of the form n^2+x with x<2*n, or 0 if no such prime exist.

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2, 5, 11, 17, 29, 41, 59, 71, 0, 107, 137, 149, 179, 197, 227, 269, 311, 347, 0, 419, 461, 521, 569, 599, 641, 0, 0, 809, 857, 0, 1019, 1031, 1091, 0, 1277, 1301, 1427, 1451, 0, 1607, 1697, 1787, 1871, 1949, 2027, 2129, 2237, 2309, 0, 2549, 2657, 2711, 0, 2969 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Pierre CAMI, Table of n, a(n) for n = 1..10000`
	EXAMPLE	`1^2+1=2 x=1, x<21 and 2 and 3 twin primes so a(1)=2` `2^2+1=5 x=1, x<22 and 5 and 7 twin primes so a(2)=5` `3^2+2=11 x=2, x<2*3 and 11 and 13 twin primes so a(3)=11`
	CROSSREFS	`Cf. A091592.` `Sequence in context: A124850 A156850 A156611 this_sequence A111166 A064337 A076873` `Adjacent sequences: A143506 A143507 A143508 this_sequence A143510 A143511 A143512`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Aug 21 2008`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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