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

Author

Omar E. Pol, Jul 16 2012

Keywords

• nonn
• tabf
• hard
• more

Comments

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

Examples

			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.
		

Links

• MIT OpenCourseWare, Energy Levels of Nucleons in a Smoothly-Varying Potential Well

Crossrefs

Partial sums of A213372. Other versions are A210984, A212014, A212124, A213364.

Cf. A018226, A213371, A213373.

Formula

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