A108047 - OEIS

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A108047

Concatenation of pairs of numbers with the first two terms 1 and 1.

1, 1, 11, 111, 11111, 11111111, 1111111111111, 111111111111111111111, 1111111111111111111111111111111111, 1111111111111111111111111111111111111111111111111111111, 11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	COMMENTS	`(10^F(n)-1)/9.`
	FORMULA	`a(n)=A037842(n-2), n>1. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 24 2008]`
	EXAMPLE	`The third term is 11 which is the concatenation of the first two terms 1 and 1.`
	CROSSREFS	`Sequence in context: A015468 A037842 A131293 * A144784 A030175 A058949` `Adjacent sequences: A108044 A108045 A108046 * A108048 A108049 A108050`
	KEYWORD	`nonn,base`
	AUTHOR	`Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jun 01 2005`

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.