A282510 - cp's OEIS frontend

A282510 Irregular triangle T(n,k) read by rows: Each term is the least positive integer such that no row, column, diagonal, or antidiagonal contains a repeated term; and each row terminates at k when it contains all numbers <= k.

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

[1, 2, 3, 1, 4, 5, 2, 3, 1, 3, 1, 4, 5, 2, 5, 2, 3, 1, 4, 6, 4, 5, 2, 3, 7, 8, 9, 1, 7, 8, 6, 4, 5, 9, 10, 11, 2, 3, 1, 9, 10, 7, 8, 6, 11, 12, 13, 4, 5, 2, 3, 1, 8, 6, 9, 10, 7, 13, 14, 15, 11, 12, 4, 5, 2, 3, 1, 10, 11, 12, 6, 9, 1, 7, 8, 13, 14, 15, 16, 4, 5, 2, 3]

cp's OEIS Frontend

A282510 Irregular triangle T(n,k) read by rows: Each term is the least positive integer such that no row, column, diagonal, or antidiagonal contains a repeated term; and each row terminates at k when it contains all numbers <= k.

Table of values

List of values

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

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

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