id:A024551 - OEIS Search Results

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a(n) = [ a(n-1)/(sqrt(5) - 2) ], where a(0) = 1.

+0
1

1, 4, 16, 67, 283, 1198, 5074, 21493, 91045, 385672, 1633732, 6920599, 29316127, 124185106, 526056550, 2228411305, 9439701769, 39987218380, 169388575288, 717541519531, 3039554653411, 12875760133174, 54542595186106, 231046140877597 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: (-x^2-x+1)/[(1-x)(1-4x-x^2)].`
	CROSSREFS	`Sequence in context: A110276 A026883 A151242 this_sequence A091153 A158761 A089979` `Adjacent sequences: A024548 A024549 A024550 this_sequence A024552 A024553 A024554`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

AT&T Labs Research