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.

A266213 Square array A(n,r), the number of neighbors at a sharp Manhattan distance r in a finite n-hypercube lattice, read by upwards antidiagonals; A(n,r) = Sum_{k=0..min(n,r)} binomial(r-1,k-1)*binomial(n,k)* 2^k.

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 2
5 0
6 1
7 4
8 2
9 0
10 1
11 6
12 8
13 2
14 0
15 1
16 8
17 18
18 12
19 2
20 0
21 1
22 10
23 32
24 38
25 16
26 2
27 0
28 1
29 12
30 50
31 88
32 66
33 20
34 2
35 0
36 1
37 14
38 72
39 170
40 192
41 102
42 24
43 2
44 0
45 1
46 16
47 98
48 292
49 450
50 360
51 146
52 28
53 2
54 0
55 1
56 18
57 128
58 462
59 912
60 1002
61 608
62 198
63 32
64 2
65 0

List of values

[1, 1, 0, 1, 2, 0, 1, 4, 2, 0, 1, 6, 8, 2, 0, 1, 8, 18, 12, 2, 0, 1, 10, 32, 38, 16, 2, 0, 1, 12, 50, 88, 66, 20, 2, 0, 1, 14, 72, 170, 192, 102, 24, 2, 0, 1, 16, 98, 292, 450, 360, 146, 28, 2, 0, 1, 18, 128, 462, 912, 1002, 608, 198, 32, 2, 0]