A343853 - cp's OEIS frontend

A343853 Irregular triangle read by rows: the n-th row gives the row indices of the matrix of 1..n^2 filled successively back and forth along antidiagonals.

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	1
8	2
9	3
10	2
11	1
12	2
13	3
14	3
15	1
16	1
17	2
18	3
19	2
20	1
21	1
22	2
23	3
24	4
25	4
26	3
27	2
28	3
29	4
30	4
31	1
32	1
33	2
34	3
35	2
36	1
37	1
38	2
39	3
40	4
41	5
42	4
43	3
44	2
45	1
46	2
47	3
48	4
49	5
50	5
51	4
52	3
53	4
54	5
55	5
56	1
57	1
58	2
59	3
60	2
61	1
62	1
63	2
64	3
65	4
66	5
67	4
68	3
69	2
70	1
71	1
72	2
73	3
74	4
75	5
76	6
77	6
78	5
79	4
80	3
81	2
82	3
83	4
84	5
85	6
86	6
87	5
88	4
89	5
90	6
91	6

[1, 1, 1, 2, 2, 1, 1, 2, 3, 2, 1, 2, 3, 3, 1, 1, 2, 3, 2, 1, 1, 2, 3, 4, 4, 3, 2, 3, 4, 4, 1, 1, 2, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 5, 4, 3, 4, 5, 5, 1, 1, 2, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 6, 6, 5, 4, 3, 2, 3, 4, 5, 6, 6, 5, 4, 5, 6, 6]

cp's OEIS Frontend

A343853 Irregular triangle read by rows: the n-th row gives the row indices of the matrix of 1..n^2 filled successively back and forth along antidiagonals.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	1
8	2
9	3
10	2
11	1
12	2
13	3
14	3
15	1
16	1
17	2
18	3
19	2
20	1
21	1
22	2
23	3
24	4
25	4
26	3
27	2
28	3
29	4
30	4
31	1
32	1
33	2
34	3
35	2
36	1
37	1
38	2
39	3
40	4
41	5
42	4
43	3
44	2
45	1
46	2
47	3
48	4
49	5
50	5
51	4
52	3
53	4
54	5
55	5
56	1
57	1
58	2
59	3
60	2
61	1
62	1
63	2
64	3
65	4
66	5
67	4
68	3
69	2
70	1
71	1
72	2
73	3
74	4
75	5
76	6
77	6
78	5
79	4
80	3
81	2
82	3
83	4
84	5
85	6
86	6
87	5
88	4
89	5
90	6
91	6

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	1
8	2
9	3
10	2
11	1
12	2
13	3
14	3
15	1
16	1
17	2
18	3
19	2
20	1
21	1
22	2
23	3
24	4
25	4
26	3
27	2
28	3
29	4
30	4
31	1
32	1
33	2
34	3
35	2
36	1
37	1
38	2
39	3
40	4
41	5
42	4
43	3
44	2
45	1
46	2
47	3
48	4
49	5
50	5
51	4
52	3
53	4
54	5
55	5
56	1
57	1
58	2
59	3
60	2
61	1
62	1
63	2
64	3
65	4
66	5
67	4
68	3
69	2
70	1
71	1
72	2
73	3
74	4
75	5
76	6
77	6
78	5
79	4
80	3
81	2
82	3
83	4
84	5
85	6
86	6
87	5
88	4
89	5
90	6
91	6

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	1
8	2
9	3
10	2
11	1
12	2
13	3
14	3
15	1
16	1
17	2
18	3
19	2
20	1
21	1
22	2
23	3
24	4
25	4
26	3
27	2
28	3
29	4
30	4
31	1
32	1
33	2
34	3
35	2
36	1
37	1
38	2
39	3
40	4
41	5
42	4
43	3
44	2
45	1
46	2
47	3
48	4
49	5
50	5
51	4
52	3
53	4
54	5
55	5
56	1
57	1
58	2
59	3
60	2
61	1
62	1
63	2
64	3
65	4
66	5
67	4
68	3
69	2
70	1
71	1
72	2
73	3
74	4
75	5
76	6
77	6
78	5
79	4
80	3
81	2
82	3
83	4
84	5
85	6
86	6
87	5
88	4
89	5
90	6
91	6