OFFSET
0,2
REFERENCES
T. P. Martin, Shells of atoms, Phys. Reports, 273 (1996), 199-241, eq. (17).
LINKS
Harry J. Smith, Table of n, a(n) for n = 0..1000
FORMULA
10*n^3/3+10*n^2+56*n/3.
G.f.: 4*x*(8-6*x+3*x^2)/(1-x)^4. [Colin Barker, Apr 20 2012]
PROG
(PARI) { for (n=0, 1000, write("b063498.txt", n, " ", 10*n^2 + (10*n^3 + 56*n)/3) ) } [Harry J. Smith, Aug 23 2009]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Aug 01 2001
STATUS
approved