id:A128063 - OEIS Search Results

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Hankel transform of A115962.

+0
1

1, 2, 0, -8, -16, -32, -64, 0, 256, 512, 1024, 2048, 0, -8192, -16384, -32768, -65536, 0, 262144, 524288, 1048576, 2097152, 0, -8388608, -16777216, -33554432, -67108864, 0, 268435456, 536870912, 1073741824, 2147483648, 0, -8589934592, -17179869184 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=2^n((1/2-3sqrt(5)/10)cos(3pin/5)+sqrt(1/10-sqrt(5)/50)sin(3pin/5) +(3sqrt(5)/10+1/2)cos(pin/5)-sqrt(sqrt(5)/50+1/10)sin(pin/5)); a(n)=2^nsum(k=0..,floor((n+2)/2), C(n-k+2,k)(-1)^kF(n-2k+3)}; a(n)=2^nA099443(n+2);`
	CROSSREFS	`Sequence in context: A088138 A120559 A120555 this_sequence A087205 A062134 A002909` `Adjacent sequences: A128060 A128061 A128062 this_sequence A128064 A128065 A128066`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Feb 13 2007`

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

AT&T Labs Research