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A179301 Number of stable isotopes of element n. 1
2, 2, 2, 1, 2, 2, 2, 3, 1, 3, 1, 3, 1, 3, 1, 4, 2, 3, 3, 6, 1, 5, 2, 4, 1, 4, 1, 5, 2, 5, 2, 5, 1, 6, 2, 6, 2, 4, 1, 5, 1, 7, 0, 7, 1, 6, 2, 8, 2, 10, 2, 8, 1, 9, 1, 7, 2, 4, 1, 7, 0, 7, 2, 7, 1, 7, 1, 6, 1, 7, 2, 6, 2, 5, 2, 7, 2, 6, 1, 7, 2, 4, 1, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Stable in this context means either theoretically stable (e.g. Hydrogen-1), or technically radioactive but stable for all practical purposes (e.g. Bismuth-209).

Radioactive nuclides with a half-life of 700 million years or greater are included.

LINKS

Table of n, a(n) for n=1..118.

Wikipedia, Table of nuclides.

CROSSREFS

Cf. A058317, A121818, A007656.

Sequence in context: A129451 A097195 A274138 * A008334 A116858 A182134

Adjacent sequences:  A179298 A179299 A179300 * A179302 A179303 A179304

KEYWORD

nonn

AUTHOR

Will Nicholes, Jul 10 2010

EXTENSIONS

a(106)-a(118) (Sg to Uuo) by Jeremy Tan, Oct 24 2013

STATUS

approved

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Last modified September 26 00:10 EDT 2017. Contains 292500 sequences.