id:A136576 - OEIS Search Results

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Series reversion of x*c(x)/(1-2x), c(x) the g.f. of A000108.

+0
2

0, 1, -3, 10, -36, 136, -532, 2136, -8752, 36448, -153824, 656448, -2827904, 12281088, -53709632, 236337536, -1045603072, 4648306176, -20753783296, 93022530560, -418415228928, 1888065744896, -8544699844608, 38774062837760 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Hankel transform of a(n+1) is A136577 (conjecture).`
	FORMULA	`G.f.: (sqrt(1+4x-4x^2)+4x^2-2x-1)/(8x^2);`
	CROSSREFS	`Sequence in context: A122448 A007582 A026854 this_sequence A129156 A002212 A149041` `Adjacent sequences: A136573 A136574 A136575 this_sequence A136577 A136578 A136579`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jan 08 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research