id:A122654 - OEIS Search Results

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Smallest prime p such that p^2 equal to the sum of 2n+1 consecutive odd primes, or 1 if such a prime does not exist.

+0
2

7, 31, 13, 29, 107, 293, 821, 379, 293, 83, 31, 241, 37, 653, 43, 211, 73, 1123, 311, 1567, 1607, 929, 233, 4801, 601, 5087, 307, 163, 709, 1021, 983, 191, 1327, 241, 5443, 157, 277, 151, 743, 4651, 32371, 1493, 1373, 8521, 683, 7919, 947, 1279, 10847, 1613 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(1) = 7 because A122560[1] = 7 and 7^2 = 49 = 13 + 17 + 19 = p(6) + p(7) + p(8).`
	CROSSREFS	`Cf. A122560, A070934.` `Sequence in context: A024311 A026653 A065916 this_sequence A103630 A040064 A000696` `Adjacent sequences: A122651 A122652 A122653 this_sequence A122655 A122656 A122657`
	KEYWORD	`nonn`
	AUTHOR	`Alexander Adamchuk (alex(AT)kolmogorov.com), Sep 21 2006`
	EXTENSIONS	`More terms from Don Reble (djr(AT)nk.ca), Sep 22 2006`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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