A364230 - cp's OEIS frontend

A364230 Triangle read by rows: T(n, k) is the number of n X n symmetric Toeplitz matrices of rank k using all the integers 1, 2, ..., n.

n	a(n)
1	1
2	0
3	2
4	0
5	0
6	6
7	0
8	0
9	0
10	24
11	0
12	0
13	0
14	0
15	120
16	0
17	0
18	0
19	0
20	2
21	718
22	0
23	0
24	0
25	0
26	4
27	31
28	5005
29	0
30	0
31	0
32	0
33	0
34	2
35	44
36	40274
37	0
38	0
39	0
40	0
41	0
42	0
43	4
44	272
45	362604
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	111
54	774
55	3627915
56	0
57	0
58	0
59	0
60	0
61	0
62	2
63	14
64	244
65	6974
66	39909566
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	4
75	64
76	743
77	9533
78	478991256

[1, 0, 2, 0, 0, 6, 0, 0, 0, 24, 0, 0, 0, 0, 120, 0, 0, 0, 0, 2, 718, 0, 0, 0, 0, 4, 31, 5005, 0, 0, 0, 0, 0, 2, 44, 40274, 0, 0, 0, 0, 0, 0, 4, 272, 362604, 0, 0, 0, 0, 0, 0, 0, 111, 774, 3627915, 0, 0, 0, 0, 0, 0, 2, 14, 244, 6974, 39909566, 0, 0, 0, 0, 0, 0, 0, 4, 64, 743, 9533, 478991256]

cp's OEIS Frontend

A364230 Triangle read by rows: T(n, k) is the number of n X n symmetric Toeplitz matrices of rank k using all the integers 1, 2, ..., n.

Table of values

List of values