OFFSET
1,1
REFERENCES
M. Goeppert Mayer, Nuclear configurations in the spin-orbit coupling model. I. Empirical evidence, Phys. Rev. 78: 16 (1950). II. Theoretical considerations, Phys. Rev. 78: 22 (1950).
FORMULA
a(n) = 2*A212013(n).
EXAMPLE
Example 1: written as a triangle in which row i is related to the (i-1)st level of nucleus. Triangle begins:
2;
6, 8;
14, 18, 20;
28, 34, 38, 40;
50, 58, 64, 68, 70;
82, 92, 100, 106, 110, 112;
126, 138, 148, 156, 162, 166, 168;
...
Example 2: written as an irregular triangle in which row j is related to the j-th shell of nucleus. In this case note that row 4 has only one term. Triangle begins:
2;
6, 8;
14, 18, 20;
28,
34, 38, 40, 50;
58, 64, 68, 70, 82;
92, 100, 106, 110, 112, 126;
138, 148, 156, 162, 166, 168, 184;
...
First seven terms of right border give the "magic numbers" A018226.
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Omar E. Pol, Jul 15 2012
STATUS
approved