id:A098561 - OEIS Search Results

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Numbers n such that the sum of the squares of the first n primes is prime.

+0
10

2, 18, 26, 36, 68, 78, 144, 158, 164, 174, 192, 212, 216, 236, 264, 288, 294, 338, 344, 356, 384, 404, 416, 426, 500, 516, 518, 522, 534, 540, 548, 614, 678, 680, 782, 858, 866, 876, 878, 896, 900, 912, 950, 974, 996, 1064, 1080, 1082, 1100, 1122, 1158, 1160 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) must clearly be even.`
	LINKS	`Zak Seidov, Table of n, a(n) for n = 1..1050`
	EXAMPLE	`2 is a term as the sum of the squares of the first two primes is 2^2 + 3^2 = 13, which is prime.`
	CROSSREFS	`Cf. A098562 (corresponding primes), A098563 (sums of cubes of primes), A013916 (sums of primes).` `Sequence in context: A063430 A031104 A115042 this_sequence A141426 A101844 A166259` `Adjacent sequences: A098558 A098559 A098560 this_sequence A098562 A098563 A098564`
	KEYWORD	`nonn`
	AUTHOR	`Rick L. Shepherd (rshepherd2(AT)hotmail.com), Sep 14 2004`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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