A273719 - cp's OEIS frontend

A273719 Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k horizontal steps in the peaks (n>=2, k>=1).

n	a(n)
2	1
3	1
4	1
5	3
6	1
7	1
8	8
9	3
10	1
11	1
12	21
13	9
14	3
15	1
16	1
17	55
18	27
19	10
20	3
21	1
22	1
23	144
24	82
25	33
26	11
27	3
28	1
29	1
30	377
31	251
32	110
33	39
34	12
35	3
36	1
37	1
38	987
39	770
40	368
41	139
42	45
43	13
44	3
45	1
46	1
47	2584
48	2358
49	1229
50	495
51	169
52	51
53	14
54	3
55	1
56	1
57	6765
58	7191
59	4085
60	1755
61	632
62	200
63	57
64	15
65	3
66	1
67	1

[1, 1, 1, 3, 1, 1, 8, 3, 1, 1, 21, 9, 3, 1, 1, 55, 27, 10, 3, 1, 1, 144, 82, 33, 11, 3, 1, 1, 377, 251, 110, 39, 12, 3, 1, 1, 987, 770, 368, 139, 45, 13, 3, 1, 1, 2584, 2358, 1229, 495, 169, 51, 14, 3, 1, 1, 6765, 7191, 4085, 1755, 632, 200, 57, 15, 3, 1, 1]

cp's OEIS Frontend

A273719 Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k horizontal steps in the peaks (n>=2, k>=1).

Table of values

List of values