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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 (list; graph; refs; listen; history; text; internal format)
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 Smoothly-Varying Potential Well

FORMULA

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

EXAMPLE

Written as an irregular triangle in which row j is related to the j-th 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

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Last modified October 22 11:21 EDT 2017. Contains 293761 sequences.