cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A373451 Number T(n,k) of (binary) heaps of length n whose element set equals [k]; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 1
6 0
7 1
8 3
9 2
10 0
11 1
12 5
13 7
14 3
15 0
16 1
17 9
18 23
19 23
20 8
21 0
22 1
23 14
24 55
25 92
26 70
27 20
28 0
29 1
30 24
31 147
32 386
33 502
34 320
35 80
36 0
37 1
38 34
39 281
40 1004
41 1861
42 1880
43 985
44 210
45 0
46 1
47 54
48 633
49 3128
50 8113
51 12008
52 10237
53 4690
54 896
55 0
56 1
57 79
58 1241
59 8039
60 27456
61 54900
62 66730
63 48650
64 19600
65 3360

List of values

[1, 0, 1, 0, 1, 1, 0, 1, 3, 2, 0, 1, 5, 7, 3, 0, 1, 9, 23, 23, 8, 0, 1, 14, 55, 92, 70, 20, 0, 1, 24, 147, 386, 502, 320, 80, 0, 1, 34, 281, 1004, 1861, 1880, 985, 210, 0, 1, 54, 633, 3128, 8113, 12008, 10237, 4690, 896, 0, 1, 79, 1241, 8039, 27456, 54900, 66730, 48650, 19600, 3360]