id:A113720 - OEIS Search Results

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

+0
2

1, 1, 2, 11, 12, 31, 1111, 15, 51, 121, 1211, 11212, 114111, 2111213, 21313111, 13111111113, 111114181, 118151111, 5111131114, 2111414131, 1413113111111, 131111111111216, 1111217110111, 13101114111213, 4111214111313111 (list; graph; listen)

	OFFSET	`1,3`
	EXAMPLE	`As a(6)=1111 and a(7)=15, their digits are 111115, that is (5) 1's followed by (1) 1, so a(8) = 51.`
	CROSSREFS	`Cf. A113721.` `Sequence in context: A136967 A137001 A136996 this_sequence A034118 A140148 A117547` `Adjacent sequences: A113717 A113718 A113719 this_sequence A113721 A113722 A113723`
	KEYWORD	`nonn,base`
	AUTHOR	`Floor van Lamoen (fvlamoen(AT)hotmail.com), Nov 08 2005`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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