A115362 - OEIS

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A115362

Row sums of ((1,x)+(x,x^2))^(-1)*((1,x)-(x,x^2))^(-1) (using Riordan array notation).

1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 4, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 3 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	COMMENTS	`Row sums of the matrix product A115358*A115361.` `Generalized Ruler Function for k=4 - Frank Ruskey (http://www.cs.uvic.ca/~ruskey/) and Chris Deugau (deugaucj(AT)uvic.ca)`
	FORMULA	`g.f.: A(z) = sum(k>=0, x^4^k/(1-x^4^k)) - Frank Ruskey (http://www.cs.uvic.ca/~ruskey/) and Chris Deugau (deugaucj(AT)uvic.ca)`
	CROSSREFS	`Sequence in context: A022929 A161102 A161101 * A161100 A053543 A161099` `Adjacent sequences: A115359 A115360 A115361 * A115363 A115364 A115365`
	KEYWORD	`nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jan 21 2006`

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Last modified February 17 13:08 EST 2012. Contains 206027 sequences.