A137252 - cp's OEIS frontend

A137252 Triangle T(n,k) read by rows: number of k X k triangular (0,1)-matrices with exactly n entries equal to 1 and no zero rows or columns.

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	4
14	1
15	0
16	0
17	0
18	4
19	11
20	1
21	0
22	0
23	0
24	1
25	33
26	26
27	1
28	0
29	0
30	0
31	0
32	42
33	171
34	57
35	1
36	0
37	0
38	0
39	0
40	26
41	507
42	718
43	120
44	1
45	0
46	0
47	0
48	0
49	8
50	840
51	4017
52	2682
53	247
54	1
55	0
56	0
57	0
58	0
59	1
60	865
61	12866
62	25531
63	9327
64	502
65	1
66	0
67	0
68	0
69	0
70	0
71	584
72	26831
73	138080
74	141904
75	30973
76	1013
77	1

[1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 4, 1, 0, 0, 0, 4, 11, 1, 0, 0, 0, 1, 33, 26, 1, 0, 0, 0, 0, 42, 171, 57, 1, 0, 0, 0, 0, 26, 507, 718, 120, 1, 0, 0, 0, 0, 8, 840, 4017, 2682, 247, 1, 0, 0, 0, 0, 1, 865, 12866, 25531, 9327, 502, 1, 0, 0, 0, 0, 0, 584, 26831, 138080, 141904, 30973, 1013, 1]

cp's OEIS Frontend

A137252 Triangle T(n,k) read by rows: number of k X k triangular (0,1)-matrices with exactly n entries equal to 1 and no zero rows or columns.

Table of values

List of values