

A213374


Total number of states of the first n subshells of the nuclear shell model in which the subshells are ordered by energy level in increasing order.


8



2, 6, 8, 14, 16, 20, 28, 32, 38, 40, 50, 58, 64, 76, 80, 82, 90, 100, 114, 118, 124, 126
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OFFSET

1,1


COMMENTS

First differs from A212124 at a(14). For more information see A213372.


LINKS

Table of n, a(n) for n=1..22.
MIT OpenCourseWare, Energy Levels of Nucleons in a SmoothlyVarying Potential Well


FORMULA

a(n) = 2*A213373(n).


EXAMPLE

Written as an irregular triangle in which row j is related to the jth shell of nucleus. Note that row 4 has only one term. Triangle begins:
2;
6, 8;
14, 16, 20;
28;
32, 38, 40, 50;
58, 64, 76, 80, 82;
90, 100, 114, 118, 124, 126;
...
First seven terms of right border give the "magic numbers" A018226.


CROSSREFS

Partial sums of A213372. Other versions are A210984, A212014, A212124, A213364.
Cf. A018226, A213371, A213373.
Sequence in context: A210984 A213364 A212124 * A271729 A249624 A104636
Adjacent sequences: A213371 A213372 A213373 * A213375 A213376 A213377


KEYWORD

nonn,tabf,hard,more


AUTHOR

Omar E. Pol, Jul 16 2012


STATUS

approved



