id:A156174 - OEIS Search Results

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Period 5: repeat 1,-1,1,-1,0.

+0
1

1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0 (list; graph; listen)

	OFFSET	`0,1`
	REFERENCES	`Arthur Gill, Linear Sequential Circuits, McGraw-Hill, 1966, Eq. (17-10).`
	FORMULA	`G.f.: (1+x^2)/(1+x+x^2+x^3+x^4).` `a(n)=-(1/5){(n mod 5)+[(n+1) mod 5]-2[(n+2) mod 5]+2[(n+3) mod 5]-2[(n+4) mod 5]}, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Nov 12 2009]`
	CROSSREFS	`Sequence in context: A120529 A099443 A132342 this_sequence A106467 A106468 A030317` `Adjacent sequences: A156171 A156172 A156173 this_sequence A156175 A156176 A156177`
	KEYWORD	`sign`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Nov 06 2009`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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