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.

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

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