id:A085457 - OEIS Search Results

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Sum(Sum a(j)a(i-j),(j=0,..,i)),(i=0,..,n)=(-11)^n.

+0
1

1, -6, 48, -438, 4206, -41586, 418980, -4277130, 44089320, -457891170, 4783741248, -50218890738, 529300238574, -5597562756894, 59366869030668, -631200956847558, 6725615443683870, -71800018913609970, 767806202604650880, -8223081959016322530, 88187484604146004506 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: A(x)=Sqrt((1-x)/(1+11x))`
	MATHEMATICA	`CoefficientList[Series[Sqrt[(1-x)/(1+11 x)], {x, 0, 20}], x]`
	CROSSREFS	`Sequence in context: A002918 A005399 A037184 this_sequence A105627 A051578 A052639` `Adjacent sequences: A085454 A085455 A085456 this_sequence A085458 A085459 A085460`
	KEYWORD	`easy,sign`
	AUTHOR	`Mario Catalani (mario.catalani(AT)unito.it), Jul 01 2003`

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Last modified August 28 22:44 EDT 2008. Contains 143251 sequences.

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