

A117635


Royal elements sequence from A018226 plus closed next shell at 168: H,B,Cl,Mn,Ag,Au,X(Unknown).


0




OFFSET

0,2


COMMENTS

The 168 (1683) is arrived at as the inert gas state electrically when the next f electrons and the first g electrons are filled. It also agrees with the Meastro sequence at 13^2. This approach predicts a relatively stable state about 16 neutrons/protons lower than the Pythagoren approach mentioned in A018226. 168 also has the benefit of being the Klein SPL(2,7) and Fano projective Plane group element number in a geodetic geometric model.


LINKS

Table of n, a(n) for n=0..6.


FORMULA

a(n) = Abs[A018226[n]3]


CROSSREFS

Cf. A018226.
Sequence in context: A242178 A063588 A307286 * A268526 A018447 A196142
Adjacent sequences: A117632 A117633 A117634 * A117636 A117637 A117638


KEYWORD

nonn,uned


AUTHOR

Roger L. Bagula, Apr 08 2006


STATUS

approved



