id:A029701 - OEIS Search Results

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Number of lines on the intersection of two general hypersurfaces of degree n in complex projective (n+2)-space.

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1, 16, 1053, 111616, 19188125, 4782986496, 1636365422153, 735546407124992, 420472391422517289, 297915693945728000000, 256254423319439013201029, 263056604016582698937090048, 317691429498449659489885141925 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Coefficient of x^(n+2)y^(n+1) in the polynomial (x-y)product((kx+(n-k)y)^2, k=0..n)`
	CROSSREFS	`Sequence in context: A067490 A130036 A013735 this_sequence A053903 A102807 A064346` `Adjacent sequences: A029698 A029699 A029700 this_sequence A029702 A029703 A029704`
	KEYWORD	`nonn,easy`
	AUTHOR	`Paolo Dominici (pl.dm(AT)libero.it)`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

AT&T Labs Research