id:A131098 - OEIS Search Results

Search: id:A131098

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1 circle, 1 area. 2 identical circles, the second with center on the other, 3 areas. 3 identical the third with centre on both the others, 7 areas...

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1, 3, 7, 11, 15, 19, 23, 27 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`This we did in math lessons, over and over again, 45 years ago.`
	CROSSREFS	`Sequence in context: A079710 A124981 A059554 this_sequence A103543 A004767 A118894` `Adjacent sequences: A131095 A131096 A131097 this_sequence A131099 A131100 A131101`
	KEYWORD	`nonn,uned`
	AUTHOR	`Hans Isdahl (hansi(AT)nordtroms.net), Sep 24 2007`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.