A143849 - OEIS

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A143849

Imaginary part of x(n) defined as x(n+1)=x(n)^2+i with

0, 1, 3, 1, -17, -2719, -33231617, -1990664248298239, 825155821714086784897292716543, -6468873315977272230111786035347284128217298704834756326835199 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	COMMENTS	`A143848(n) = real part of x(n).`
	FORMULA	`a(n+1) = 2a(n)A143848(n) + 1.`
	EXAMPLE	`x starts with 1, 1+i, 3i, -9+i, 80-17i, 6111-2719*i, ...`
	CROSSREFS	`Sequence in context: A060281 A151918 A089974 * A105626 A071210 A051141` `Adjacent sequences: A143846 A143847 A143848 * A143850 A143851 A143852`
	KEYWORD	`sign`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 03 2008`

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Last modified February 17 10:57 EST 2012. Contains 206009 sequences.