A273897 - cp's OEIS frontend

A273897 Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having abscissa of first descent k (n>=2, 1<=k<=n-1).

n	a(n)
2	1
3	1
4	1
5	2
6	2
7	1
8	4
9	5
10	3
11	1
12	9
13	12
14	9
15	4
16	1
17	22
18	30
19	25
20	14
21	5
22	1
23	57
24	78
25	69
26	44
27	20
28	6
29	1
30	154
31	210
32	192
33	133
34	70
35	27
36	7
37	1
38	429
39	582
40	542
41	396
42	230
43	104
44	35
45	8
46	1
47	1223
48	1651
49	1554
50	1176
51	731
52	369
53	147
54	44
55	9
56	1
57	3550
58	4772
59	4521
60	3504
61	2285
62	1248
63	560
64	200
65	54
66	10
67	1

[1, 1, 1, 2, 2, 1, 4, 5, 3, 1, 9, 12, 9, 4, 1, 22, 30, 25, 14, 5, 1, 57, 78, 69, 44, 20, 6, 1, 154, 210, 192, 133, 70, 27, 7, 1, 429, 582, 542, 396, 230, 104, 35, 8, 1, 1223, 1651, 1554, 1176, 731, 369, 147, 44, 9, 1, 3550, 4772, 4521, 3504, 2285, 1248, 560, 200, 54, 10, 1]

cp's OEIS Frontend

A273897 Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having abscissa of first descent k (n>=2, 1<=k<=n-1).

Table of values

List of values