id:A130838 - OEIS Search Results

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Sorted list of strings that can be obtained by starting with 12 and repeatedly doubling any substring in place.

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12, 112, 122, 1112, 1122, 1212, 1222, 11112, 11122, 11212, 11222, 12112, 12122, 12212, 12222, 111112, 111122, 111212, 111222, 112112, 112122, 112212, 112222, 121112, 121122, 121212, 121222, 122112, 122122, 122212, 122222 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`The list contains 2^(n-2) strings of length n, namely 1{1,2}^(n-2)2, for n >= 2.`
	LINKS	`Index entries for doubling substrings`
	CROSSREFS	`Sequence in context: A123933 A077754 A044344 this_sequence A044725 A016152 A089700` `Adjacent sequences: A130835 A130836 A130837 this_sequence A130839 A130840 A130841`
	KEYWORD	`nonn`
	AUTHOR	`njas, Feb 22 2008`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

AT&T Labs Research