A213364 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, 56, 64, 66, 70, 82, 90, 94, 108, 118, 120, 126, 136, 148, 164, 170, 172, 180, 184

Offset

1,1

Comments

First differs from A212124 at a(12).

References

I. Talmi, Simple Models of Complex Nuclei, Hardwood Academic Publishers (1993).

Links

Table of n, a(n) for n=1..29.

Formula

a(n) = 2*A213363(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;
56,   64,  66,  70,  82;
90,   94, 108, 118, 120, 126;
136, 148, 164, 170, 172, 180, 184;
...
First seven terms of right border give the "magic numbers" A018226

Crossrefs

Partial sums of A213362. Other versions are A210984, A212014, A212124, A213374.

Cf. A018226, A212121-A212124, A213361, A213363.

Sequence in context: A109440 A063242 A210984 * A212124 A213374 A271729

Adjacent sequences: A213361 A213362 A213363 * A213365 A213366 A213367

Keyword

nonn,tabf,hard,more

Author

Omar E. Pol, Jun 23 2012

Status

approved