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.

A380649 Rectangular array ((-1)*D(i,j,1,2)) read by descending antidiagonals: D(i,j,s,n) denotes the determinant of the matrix described in Comments.

Table of values

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

List of values

[1, 4, 3, 8, 7, 6, 13, 12, 11, 10, 19, 18, 17, 16, 15, 26, 25, 24, 23, 22, 21, 34, 33, 32, 31, 30, 29, 28, 43, 42, 41, 40, 39, 38, 37, 36, 53, 52, 51, 50, 49, 48, 47, 46, 45, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 76, 75, 74, 73, 72, 71, 70, 69, 68, 67, 66]