id:A074047 - OEIS Search Results

Search: id:A074047

Displaying 1-1 of 1 results found.

page 1

a(n)=a(n-1)*a(n-2)*a(n-3)*(1/a(n-1)+1/a(n-2)+1/a(n-3)) starting with a(1)=a(2)=a(3)=1.

+0
2

1, 1, 1, 3, 7, 31, 331, 12795, 4642051, 60935796571, 283646808320375611, 17285560913056915909539455163, 4902995236325455290013100337511909917402705547 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`a(n) tends towards a(n-1)^phi and 1.22376...^(phi^n) where phi=(1+sqrt(5))/2=1.6180339887...`
	EXAMPLE	`a(7)=3173*(1/31+1/7+1/3)=331.`
	CROSSREFS	`Cf. A074046.` `Sequence in context: A030521 A105767 A063896 this_sequence A121810 A081475 A123212` `Adjacent sequences: A074044 A074045 A074046 this_sequence A074048 A074049 A074050`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Aug 14 2002`

page 1

Search completed in 0.002 seconds

Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

AT&T Labs Research