id:A075892 - OEIS Search Results

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Average of successive primes squared, (prime(n+1)^2+prime(n)^2)/2, n>=2.

+0
2

17, 37, 85, 145, 229, 325, 445, 685, 901, 1165, 1525, 1765, 2029, 2509, 3145, 3601, 4105, 4765, 5185, 5785, 6565, 7405, 8665, 9805, 10405, 11029, 11665, 12325, 14449, 16645, 17965, 19045, 20761, 22501, 23725, 25609, 27229, 28909, 30985, 32401 (list; graph; listen)

	OFFSET	`2,1`
	FORMULA	`a(n)=(prime(n+1)^2+prime(n)^2)/2, n>=2.`
	EXAMPLE	`a(2)=17 because (prime(3)^2+prime(2)^2)/2=(5^2+3^2)/2=17.`
	CROSSREFS	`Sequence in context: A050952 A093930 A048880 this_sequence A155143 A141886 A060429` `Adjacent sequences: A075889 A075890 A075891 this_sequence A075893 A075894 A075895`
	KEYWORD	`easy,nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Oct 17 2002`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research