A327891 - cp's OEIS frontend

A327891 Square array A(n,k) (n, k >= 1) read by antidiagonals, where A(n,1) = n-1; A(n,k) is the number of occurrences of A(n,k-1) in the row up to k-1.

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	1
10	3
11	1
12	1
13	1
14	1
15	4
16	3
17	3
18	2
19	1
20	1
21	5
22	1
23	1
24	2
25	2
26	1
27	1
28	6
29	4
30	4
31	3
32	1
33	2
34	1
35	1
36	7
37	1
38	1
39	1
40	3
41	1
42	2
43	1
44	1
45	8
46	5
47	5
48	3
49	2
50	3
51	1
52	2
53	1
54	1
55	9
56	1
57	1
58	2
59	2
60	1
61	3
62	1
63	2
64	1
65	1
66	10
67	6
68	6
69	4
70	3
71	4
72	1
73	3
74	1
75	2
76	1
77	1
78	11
79	1
80	1
81	1
82	3
83	2
84	4
85	1
86	3
87	1
88	2
89	1
90	1

[0, 1, 1, 1, 1, 2, 2, 2, 1, 3, 1, 1, 1, 1, 4, 3, 3, 2, 1, 1, 5, 1, 1, 2, 2, 1, 1, 6, 4, 4, 3, 1, 2, 1, 1, 7, 1, 1, 1, 3, 1, 2, 1, 1, 8, 5, 5, 3, 2, 3, 1, 2, 1, 1, 9, 1, 1, 2, 2, 1, 3, 1, 2, 1, 1, 10, 6, 6, 4, 3, 4, 1, 3, 1, 2, 1, 1, 11, 1, 1, 1, 3, 2, 4, 1, 3, 1, 2, 1, 1]

cp's OEIS Frontend

A327891 Square array A(n,k) (n, k >= 1) read by antidiagonals, where A(n,1) = n-1; A(n,k) is the number of occurrences of A(n,k-1) in the row up to k-1.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	1
10	3
11	1
12	1
13	1
14	1
15	4
16	3
17	3
18	2
19	1
20	1
21	5
22	1
23	1
24	2
25	2
26	1
27	1
28	6
29	4
30	4
31	3
32	1
33	2
34	1
35	1
36	7
37	1
38	1
39	1
40	3
41	1
42	2
43	1
44	1
45	8
46	5
47	5
48	3
49	2
50	3
51	1
52	2
53	1
54	1
55	9
56	1
57	1
58	2
59	2
60	1
61	3
62	1
63	2
64	1
65	1
66	10
67	6
68	6
69	4
70	3
71	4
72	1
73	3
74	1
75	2
76	1
77	1
78	11
79	1
80	1
81	1
82	3
83	2
84	4
85	1
86	3
87	1
88	2
89	1
90	1

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	1
10	3
11	1
12	1
13	1
14	1
15	4
16	3
17	3
18	2
19	1
20	1
21	5
22	1
23	1
24	2
25	2
26	1
27	1
28	6
29	4
30	4
31	3
32	1
33	2
34	1
35	1
36	7
37	1
38	1
39	1
40	3
41	1
42	2
43	1
44	1
45	8
46	5
47	5
48	3
49	2
50	3
51	1
52	2
53	1
54	1
55	9
56	1
57	1
58	2
59	2
60	1
61	3
62	1
63	2
64	1
65	1
66	10
67	6
68	6
69	4
70	3
71	4
72	1
73	3
74	1
75	2
76	1
77	1
78	11
79	1
80	1
81	1
82	3
83	2
84	4
85	1
86	3
87	1
88	2
89	1
90	1

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	1
10	3
11	1
12	1
13	1
14	1
15	4
16	3
17	3
18	2
19	1
20	1
21	5
22	1
23	1
24	2
25	2
26	1
27	1
28	6
29	4
30	4
31	3
32	1
33	2
34	1
35	1
36	7
37	1
38	1
39	1
40	3
41	1
42	2
43	1
44	1
45	8
46	5
47	5
48	3
49	2
50	3
51	1
52	2
53	1
54	1
55	9
56	1
57	1
58	2
59	2
60	1
61	3
62	1
63	2
64	1
65	1
66	10
67	6
68	6
69	4
70	3
71	4
72	1
73	3
74	1
75	2
76	1
77	1
78	11
79	1
80	1
81	1
82	3
83	2
84	4
85	1
86	3
87	1
88	2
89	1
90	1