A069221 - OEIS

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A069221

a(1) = a(2) = 1; a(n) = <>(a(n-1)) + <>(a(n-2)) for n > 2, where <>(k) denotes the concatenation of k with itself.

1, 1, 22, 2233, 22334455, 2233445544666688, 22334455446666884466891067001143, 2233445544666688446689106700114344668910893333766700336611667831 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,3`
	LINKS	`Table of n, a(n) for n=1..8.`
	EXAMPLE	`a(4) = <>(a(3)) + <>(a(2)) = <>(22) + <>(1) = 2222 + 11= 2233.`
	CROSSREFS	`Sequence in context: A046445 A133235 A114449 * A069222 A117990 A098130` `Adjacent sequences: A069218 A069219 A069220 * A069222 A069223 A069224`
	KEYWORD	`base,nonn`
	AUTHOR	`Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Apr 12 2002`
	STATUS	`approved`

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Last modified May 25 23:05 EDT 2013. Contains 225649 sequences.