A273713 - cp's OEIS frontend

A273713 Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k doublerises (n>=2, k>=0). A doublerise in a bargraph is any pair of adjacent up steps.

n	a(n)
2	1
3	1
4	1
5	2
6	2
7	1
8	4
9	5
10	3
11	1
12	8
13	13
14	9
15	4
16	1
17	17
18	32
19	28
20	14
21	5
22	1
23	37
24	80
25	81
26	50
27	20
28	6
29	1
30	82
31	201
32	231
33	165
34	80
35	27
36	7
37	1
38	185
39	505
40	653
41	526
42	295
43	119
44	35
45	8
46	1
47	423
48	1273
49	1824
50	1644
51	1036
52	483
53	168
54	44
55	9
56	1
57	978
58	3217
59	5058
60	5034
61	3535
62	1848
63	742
64	228
65	54
66	10
67	1

[1, 1, 1, 2, 2, 1, 4, 5, 3, 1, 8, 13, 9, 4, 1, 17, 32, 28, 14, 5, 1, 37, 80, 81, 50, 20, 6, 1, 82, 201, 231, 165, 80, 27, 7, 1, 185, 505, 653, 526, 295, 119, 35, 8, 1, 423, 1273, 1824, 1644, 1036, 483, 168, 44, 9, 1, 978, 3217, 5058, 5034, 3535, 1848, 742, 228, 54, 10, 1]

cp's OEIS Frontend

A273713 Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k doublerises (n>=2, k>=0). A doublerise in a bargraph is any pair of adjacent up steps.

Table of values

List of values