id:A051395 - OEIS Search Results

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Numbers n such that n^2 is a sum of 4 consecutive primes.

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6, 18, 24, 42, 48, 70, 144, 252, 258, 358, 378, 388, 396, 428, 486, 506, 510, 558, 608, 644, 864, 886, 960, 974, 1022, 1046, 1326, 1362, 1392, 1398, 1422, 1434, 1442, 1468, 1476, 1592, 1604, 1676, 1820, 1950, 2016, 2068, 2140, 2288, 2430, 2460 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`First of four consecutive primes in A072849.`
	FORMULA	`n^2 = Sum[Prime[i], {i, k, k+3}} for some k`
	EXAMPLE	`a(1)=6 because 66=5+7+11+13; a(2)=18 because 1818=324=73+79+83+89.`
	CROSSREFS	`Cf. A072849.` `Sequence in context: A015707 A101527 A028887 this_sequence A028558 A140450 A157800` `Adjacent sequences: A051392 A051393 A051394 this_sequence A051396 A051397 A051398`
	KEYWORD	`easy,nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Jun 21 2003`
	EXTENSIONS	`Corrected and extended by Don Reble (djr(AT)nk.ca), Nov 20 2006`

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.

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