id:A130774 - OEIS Search Results

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Cumulative concatenation of A000204 Lucas numbers (beginning at 1).

+0
5

1, 13, 134, 1347, 134711, 13471118, 1347111829, 134711182947, 13471118294776, 13471118294776123, 13471118294776123199, 13471118294776123199322, 13471118294776123199322521, 13471118294776123199322521843 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(2) = 13 is prime. a(10) = 13471118294776123 is prime. What is the next prime?`
	FORMULA	`a(1) = 1; a(n+1) = Concatenate(a(n),A000204(n+1)).`
	CROSSREFS	`Cf. A000204.` `Sequence in context: A073556 A132935 A132930 this_sequence A019519 A112225 A069511` `Adjacent sequences: A130771 A130772 A130773 this_sequence A130775 A130776 A130777`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Jonathan Vos Post (jvospost2(AT)yahoo.com), Aug 19 2007`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

AT&T Labs Research