id:A113721 - OEIS Search Results

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Concatenation of the numbers of equal successive digits of previous two terms read in inverse order, starting with a(0)=a(1)=1.

+0
3

1, 1, 2, 11, 21, 112, 131, 11112, 1511, 21114, 131211, 21111131, 115121111, 41113151, 11113141112, 13111511131, 1131311131114, 13131113131311, 2111113111113131112, 13111515121111131111, 41511111311131115151 (list; graph; listen)

	OFFSET	`1,3`
	EXAMPLE	`As a(5)=112 and a(6)=131, their digits in inverse order are 131211, and that is (1) 1 followed by (1) 3, (1) 1, (1) 2 and (2) 1's, so a(7) = 11112.`
	CROSSREFS	`Cf. A113720.` `Adjacent sequences: A113718 A113719 A113720 this_sequence A113722 A113723 A113724` `Sequence in context: A094629 A081242 A071762 this_sequence A127199 A085652 A111090`
	KEYWORD	`nonn,base`
	AUTHOR	`Floor van Lamoen (fvlamoen(AT)hotmail.com), Nov 08 2005`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

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