A104269 - OEIS

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A104269

Numbers n such that prime(n) + n is a square.

11, 37, 443, 571, 1049, 1307, 1451, 1523, 2837, 3593, 5233, 8539, 9257, 9439, 10391, 10987, 17579, 21881, 23321, 23909, 25117, 30557, 30893, 31231, 42239, 47123, 64811, 65789, 83089, 91631, 92219, 95747, 97549, 99971, 101197, 101807 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`A064371(n) + A000040(A064371(n)) = A086968(n)^2. n^2 is prime + its index A086968; n + n-th prime is a square A064371; primes A000040.`
	FORMULA	`a(n) = A086968(n)^2 - pi(a(n))`
	EXAMPLE	`37 is a term because 37 is 12-th prime and 37+12=49=7^2.`
	CROSSREFS	`Cf. A000040, A064371, A086968, A064370` `Sequence in context: A120833 A034969 A052432 * A084014 A084018 A012820` `Adjacent sequences: A104266 A104267 A104268 * A104270 A104271 A104272`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Feb 26 2005`

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Last modified February 17 13:28 EST 2012. Contains 206031 sequences.