id:A080529 - OEIS Search Results

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Number of nucleons in longest known radioactive decay series ending with Lead 206 ("uranium series"), reversed.

+0
6

206, 206, 206, 210, 210, 214, 214, 218, 222, 226, 230, 234, 238, 242, 242, 246, 250, 254, 258, 262, 266 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`The numbers are all equivalent to 2 mod 4. The sequence was submitted reversed, as it is open in the past. It is unknown if reversed decay series are finite (the "island of stability" hypothesis).`
	LINKS	`C. Heilman, The Pictorial Periodic Table`
	FORMULA	`a(n)=A080533(n)+A080537(n).`
	CROSSREFS	`Cf. A080530, A080531, A080532.` `Sequence in context: A077457 A060892 A015289 this_sequence A058180 A025351 A025343` `Adjacent sequences: A080526 A080527 A080528 this_sequence A080530 A080531 A080532`
	KEYWORD	`nonn,hard`
	AUTHOR	`Ralf Stephan (ralf(AT)ark.in-berlin.de), Feb 20 2003`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.