A350597 - cp's OEIS frontend

A350597 Irregular triangle read by rows in which row n lists the partial sums of shell numbers and respective number of electrons for all occupied shells of the n-th element of the periodic table of the elements where electron configurations are ordered according to Madelung's rule.

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	3
7	5
8	6
9	1
10	3
11	5
12	7
13	1
14	3
15	5
16	7
17	9
18	10
19	1
20	3
21	5
22	7
23	9
24	11
25	1
26	3
27	5
28	7
29	9
30	12
31	1
32	3
33	5
34	7
35	9
36	13
37	1
38	3
39	5
40	7
41	9
42	14
43	1
44	3
45	5
46	7
47	9
48	15
49	1
50	3
51	5
52	7
53	9
54	15
55	18
56	19
57	1
58	3
59	5
60	7
61	9
62	15
63	18
64	20
65	1
66	3
67	5
68	7
69	9
70	15
71	18
72	20
73	23
74	24
75	1
76	3
77	5
78	7
79	9
80	15
81	18
82	20
83	23
84	25

[1, 2, 1, 3, 1, 3, 5, 6, 1, 3, 5, 7, 1, 3, 5, 7, 9, 10, 1, 3, 5, 7, 9, 11, 1, 3, 5, 7, 9, 12, 1, 3, 5, 7, 9, 13, 1, 3, 5, 7, 9, 14, 1, 3, 5, 7, 9, 15, 1, 3, 5, 7, 9, 15, 18, 19, 1, 3, 5, 7, 9, 15, 18, 20, 1, 3, 5, 7, 9, 15, 18, 20, 23, 24, 1, 3, 5, 7, 9, 15, 18, 20, 23, 25]

cp's OEIS Frontend

A350597 Irregular triangle read by rows in which row n lists the partial sums of shell numbers and respective number of electrons for all occupied shells of the n-th element of the periodic table of the elements where electron configurations are ordered according to Madelung's rule.

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	3
7	5
8	6
9	1
10	3
11	5
12	7
13	1
14	3
15	5
16	7
17	9
18	10
19	1
20	3
21	5
22	7
23	9
24	11
25	1
26	3
27	5
28	7
29	9
30	12
31	1
32	3
33	5
34	7
35	9
36	13
37	1
38	3
39	5
40	7
41	9
42	14
43	1
44	3
45	5
46	7
47	9
48	15
49	1
50	3
51	5
52	7
53	9
54	15
55	18
56	19
57	1
58	3
59	5
60	7
61	9
62	15
63	18
64	20
65	1
66	3
67	5
68	7
69	9
70	15
71	18
72	20
73	23
74	24
75	1
76	3
77	5
78	7
79	9
80	15
81	18
82	20
83	23
84	25

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	3
7	5
8	6
9	1
10	3
11	5
12	7
13	1
14	3
15	5
16	7
17	9
18	10
19	1
20	3
21	5
22	7
23	9
24	11
25	1
26	3
27	5
28	7
29	9
30	12
31	1
32	3
33	5
34	7
35	9
36	13
37	1
38	3
39	5
40	7
41	9
42	14
43	1
44	3
45	5
46	7
47	9
48	15
49	1
50	3
51	5
52	7
53	9
54	15
55	18
56	19
57	1
58	3
59	5
60	7
61	9
62	15
63	18
64	20
65	1
66	3
67	5
68	7
69	9
70	15
71	18
72	20
73	23
74	24
75	1
76	3
77	5
78	7
79	9
80	15
81	18
82	20
83	23
84	25

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	3
7	5
8	6
9	1
10	3
11	5
12	7
13	1
14	3
15	5
16	7
17	9
18	10
19	1
20	3
21	5
22	7
23	9
24	11
25	1
26	3
27	5
28	7
29	9
30	12
31	1
32	3
33	5
34	7
35	9
36	13
37	1
38	3
39	5
40	7
41	9
42	14
43	1
44	3
45	5
46	7
47	9
48	15
49	1
50	3
51	5
52	7
53	9
54	15
55	18
56	19
57	1
58	3
59	5
60	7
61	9
62	15
63	18
64	20
65	1
66	3
67	5
68	7
69	9
70	15
71	18
72	20
73	23
74	24
75	1
76	3
77	5
78	7
79	9
80	15
81	18
82	20
83	23
84	25