A105839 - OEIS

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A105839

Numbers n such that n^2 = 19*(k^2) + 19*k + 1 (see A101180).

1, 37, 2927, 68171, 183769, 4280053, 338355383, 7880431259, 21243328861, 494765566657, 39113205561107, 910962092609711 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`Define a(1)=0, a(2)=39, a(3)=2927, a(4)=68171, a(5)=115598a(1)+a(4), a(6)=115598a(2)+a(3), a(7)=115598a(3)+a(2), a(8)=115598a(4)+a(1) then a(n)=115598*a(n-4)-a(n-8)`
	CROSSREFS	`Cf. A101880.` `Sequence in context: A193123 A174750 A183524 * A141087 A074992 A030095` `Adjacent sequences: A105836 A105837 A105838 * A105840 A105841 A105842`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierre-cami(AT)bbox.fr), Apr 22 2005`

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.