id:A134711 - OEIS Search Results

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a(n) = n-th even superperfect number divided by 2^n, minus 1.

+0
1

0, 0, 1, 3, 127, 1023, 2047, 4194303, 2251799813685247, 302231454903657293676543 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`a(n)=(A06152(n)/(2^n)) - 1.`
	EXAMPLE	`a(5)=127 because the 5th even superperfect number is 4096 and 2^5=32 and (4096/32)-1=127.`
	CROSSREFS	`Even superperfect numbers: A061652.` `Adjacent sequences: A134708 A134709 A134710 this_sequence A134712 A134713 A134714` `Sequence in context: A142007 A071151 A041867 this_sequence A108713 A123047 A097420`
	KEYWORD	`more,nonn`
	AUTHOR	`Omar E. Pol (info(AT)polprimos.com), Nov 07 2007`

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Last modified January 8 02:43 EST 2009. Contains 152824 sequences.