A273349 - cp's OEIS frontend

A273349 Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k level steps (n>=2,k>=0). A level step in a bargraph is any pair of adjacent horizontal steps at the same height.

n	a(n)
2	1
3	1
4	1
5	3
6	1
7	1
8	6
9	5
10	1
11	1
12	14
13	12
14	7
15	1
16	1
17	33
18	34
19	19
20	9
21	1
22	1
23	79
24	95
25	61
26	27
27	11
28	1
29	1
30	194
31	261
32	193
33	95
34	36
35	13
36	1
37	1
38	482
39	728
40	585
41	333
42	136
43	46
44	15
45	1
46	1
47	1214
48	2022
49	1797
50	1091
51	521
52	184
53	57
54	17
55	1
56	1
57	3090
58	5634
59	5439
60	3629
61	1821
62	763
63	239
64	69
65	19
66	1
67	1

[1, 1, 1, 3, 1, 1, 6, 5, 1, 1, 14, 12, 7, 1, 1, 33, 34, 19, 9, 1, 1, 79, 95, 61, 27, 11, 1, 1, 194, 261, 193, 95, 36, 13, 1, 1, 482, 728, 585, 333, 136, 46, 15, 1, 1, 1214, 2022, 1797, 1091, 521, 184, 57, 17, 1, 1, 3090, 5634, 5439, 3629, 1821, 763, 239, 69, 19, 1, 1]

cp's OEIS Frontend

A273349 Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k level steps (n>=2,k>=0). A level step in a bargraph is any pair of adjacent horizontal steps at the same height.

Table of values

List of values