A212122 - cp's OEIS frontend

A212122 Triangle read by rows in which row n lists the number of states of the subshells of the n-th shell of the nuclear shell model ordered by energy level in increasing order.

n	a(n)
1	2
2	4
3	2
4	6
5	2
6	4
7	8
8	4
9	6
10	2
11	10
12	8
13	6
14	4
15	2
16	12
17	10
18	8
19	6
20	4
21	2
22	14
23	10
24	6
25	12
26	8
27	2
28	4
29	16

[2, 4, 2, 6, 2, 4, 8, 4, 6, 2, 10, 8, 6, 4, 2, 12, 10, 8, 6, 4, 2, 14, 10, 6, 12, 8, 2, 4, 16]