id:A059278 - OEIS Search Results

Search: id:A059278

Displaying 1-1 of 1 results found.

page 1

G.f. is G(x*(1-x)/(1-2*x)) where G(x) is g.f. for Catalan numbers A000108.

+0
2

1, 1, 3, 11, 43, 175, 735, 3167, 13935, 62383, 283311, 1302271, 6047679, 28332991, 133752191, 635618431, 3038326911, 14599154431, 70474889471, 341624867071, 1662254107391, 8115717976831, 39747223425791, 195219110182911, 961330824858623 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`G.f.: (2x-1+sqrt((1-2x)*(1-6x+4x^2)))/(2x(x-1)).`
	PROGRAM	`(PARI) a(n)=polcoeff((2x-1 +sqrt((1-2x)(1-6x+4x^2)+x^2O(x^n)))/(2x^2-2x), n)`
	CROSSREFS	`Sequence in context: A026671 A026876 A151090 this_sequence A151091 A151092 A151093` `Adjacent sequences: A059275 A059276 A059277 this_sequence A059279 A059280 A059281`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Jan 24 2001`

page 1

Search completed in 0.002 seconds

Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

AT&T Labs Research