id:A070151 - OEIS Search Results

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Consider sequence A002144 of primes congruent to 1 (mod 4) and equal to x^2 + y^2, with y>x given by A002330 and A002331; sequence gives values x*y/2.

+0
3

1, 3, 2, 5, 3, 10, 7, 15, 12, 20, 18, 5, 15, 28, 22, 35, 33, 13, 45, 42, 7, 15, 52, 30, 8, 65, 63, 40, 17, 78, 77, 72, 45, 68, 63, 85, 57, 10, 30, 105, 102, 70, 42, 95, 55, 110, 105, 133, 130, 12, 92, 60, 153, 152, 50, 143, 75, 138, 13, 65, 165, 27, 117, 190, 150, 187, 143, 70 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n) = A002330(n+1)*A002331(n+1)/2. - David Wasserman (wasserma(AT)spawar.navy.mil), May 12 2003`
	CROSSREFS	`Cf. A002144, A002330, A002331.` `Sequence in context: A045766 A132817 A131025 this_sequence A130912 A110661 A128076` `Adjacent sequences: A070148 A070149 A070150 this_sequence A070152 A070153 A070154`
	KEYWORD	`easy,nonn`
	AUTHOR	`Lekraj Beedassy (blekraj(AT)yahoo.com), May 06 2002`
	EXTENSIONS	`More terms from David Wasserman (wasserma(AT)spawar.navy.mil), May 12 2003`

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

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