id:A118434 - OEIS Search Results

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Row sums of self-inverse triangle A118433.

+0
7

1, 0, 2, 4, -4, 0, -8, -16, 16, 0, 32, 64, -64, 0, -128, -256, 256, 0, 512, 1024, -1024, 0, -2048, -4096, 4096, 0, 8192, 16384, -16384, 0, -32768, -65536, 65536, 0, 131072, 262144, -262144, 0, -524288, -1048576, 1048576, 0, 2097152, 4194304, -4194304 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`O.g.f.: A(x) = (1+2x^2+4x^3)/(1+4x^4). E.g.f.: A(x) = cos(x)exp(-x) + sin(x)*exp(x).`
	PROGRAM	`(PARI) {a(n)=polcoeff((1+2x^2+4x^3)/(1+4x^4+xO(x^n)), n)} (PARI) /* E.g.f.: / {a(n)=local(x=X+XO(X^n)); n!polcoeff(cos(x)exp(-x)+sin(x)*exp(x), n, X)}`
	CROSSREFS	`Cf. A118433.` `Sequence in context: A112793 A009116 A146559 this_sequence A090132 A099211 A094225` `Adjacent sequences: A118431 A118432 A118433 this_sequence A118435 A118436 A118437`
	KEYWORD	`sign`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Apr 28 2006`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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