A373449 - cp's OEIS frontend

A373449 Number A(n,k) of (binary) heaps of length n whose element set is a subset of [k]; square array A(n,k), n>=0, k>=0, read by antidiagonals.

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	1
7	2
8	1
9	0
10	1
11	3
12	3
13	1
14	0
15	1
16	4
17	6
18	5
19	1
20	0
21	1
22	5
23	10
24	14
25	7
26	1
27	0
28	1
29	6
30	15
31	30
32	25
33	11
34	1
35	0
36	1
37	7
38	21
39	55
40	65
41	53
42	16
43	1
44	0
45	1
46	8
47	28
48	91
49	140
50	173
51	100
52	26
53	1
54	0
55	1
56	9
57	36
58	140
59	266
60	448
61	400
62	222
63	36
64	1
65	0
66	1
67	10
68	45
69	204
70	462
71	994
72	1225
73	1122
74	386
75	56
76	1
77	0

[1, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 3, 3, 1, 0, 1, 4, 6, 5, 1, 0, 1, 5, 10, 14, 7, 1, 0, 1, 6, 15, 30, 25, 11, 1, 0, 1, 7, 21, 55, 65, 53, 16, 1, 0, 1, 8, 28, 91, 140, 173, 100, 26, 1, 0, 1, 9, 36, 140, 266, 448, 400, 222, 36, 1, 0, 1, 10, 45, 204, 462, 994, 1225, 1122, 386, 56, 1, 0]

cp's OEIS Frontend

A373449 Number A(n,k) of (binary) heaps of length n whose element set is a subset of [k]; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

List of values