A138725 - cp's OEIS frontend

A138725 Atomic numbers in the periodic table of the elements, read downwards along 50 columns, up to the 9th period.

n	a(n)
1	1
2	3
3	11
4	19
5	37
6	55
7	87
8	119
9	169
10	4
11	12
12	20
13	38
14	56
15	88
16	120
17	170
18	21
19	39
20	57
21	89
22	121
23	171
24	58
25	90
26	122
27	172
28	123
29	173
30	124
31	174
32	125
33	175
34	126
35	176
36	127
37	177
38	128
39	178
40	129
41	179
42	130
43	180
44	131
45	181
46	132
47	182
48	133
49	183
50	134
51	184

[1, 3, 11, 19, 37, 55, 87, 119, 169, 4, 12, 20, 38, 56, 88, 120, 170, 21, 39, 57, 89, 121, 171, 58, 90, 122, 172, 123, 173, 124, 174, 125, 175, 126, 176, 127, 177, 128, 178, 129, 179, 130, 180, 131, 181, 132, 182, 133, 183, 134, 184]

cp's OEIS Frontend

A138725 Atomic numbers in the periodic table of the elements, read downwards along 50 columns, up to the 9th period.

Table of values

List of values

n	a(n)
1	1
2	3
3	11
4	19
5	37
6	55
7	87
8	119
9	169
10	4
11	12
12	20
13	38
14	56
15	88
16	120
17	170
18	21
19	39
20	57
21	89
22	121
23	171
24	58
25	90
26	122
27	172
28	123
29	173
30	124
31	174
32	125
33	175
34	126
35	176
36	127
37	177
38	128
39	178
40	129
41	179
42	130
43	180
44	131
45	181
46	132
47	182
48	133
49	183
50	134
51	184

n	a(n)
1	1
2	3
3	11
4	19
5	37
6	55
7	87
8	119
9	169
10	4
11	12
12	20
13	38
14	56
15	88
16	120
17	170
18	21
19	39
20	57
21	89
22	121
23	171
24	58
25	90
26	122
27	172
28	123
29	173
30	124
31	174
32	125
33	175
34	126
35	176
36	127
37	177
38	128
39	178
40	129
41	179
42	130
43	180
44	131
45	181
46	132
47	182
48	133
49	183
50	134
51	184

n	a(n)
1	1
2	3
3	11
4	19
5	37
6	55
7	87
8	119
9	169
10	4
11	12
12	20
13	38
14	56
15	88
16	120
17	170
18	21
19	39
20	57
21	89
22	121
23	171
24	58
25	90
26	122
27	172
28	123
29	173
30	124
31	174
32	125
33	175
34	126
35	176
36	127
37	177
38	128
39	178
40	129
41	179
42	130
43	180
44	131
45	181
46	132
47	182
48	133
49	183
50	134
51	184