A179301 Number of stable isotopes of element n.

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

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