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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.

A370882 Square array T(n,k) = 9*2^k - n read by ascending antidiagonals.

Table of values

n a(n)
0 9
1 8
2 18
3 7
4 17
5 36
6 6
7 16
8 35
9 72
10 5
11 15
12 34
13 71
14 144
15 4
16 14
17 33
18 70
19 143
20 288
21 3
22 13
23 32
24 69
25 142
26 287
27 576
28 2
29 12
30 31
31 68
32 141
33 286
34 575
35 1152
36 1
37 11
38 30
39 67
40 140
41 285
42 574
43 1151
44 2304
45 0
46 10
47 29
48 66
49 139
50 284
51 573
52 1150
53 2303
54 4608
55 -1
56 9
57 28
58 65
59 138
60 283
61 572
62 1149
63 2302
64 4607
65 9216

List of values

[9, 8, 18, 7, 17, 36, 6, 16, 35, 72, 5, 15, 34, 71, 144, 4, 14, 33, 70, 143, 288, 3, 13, 32, 69, 142, 287, 576, 2, 12, 31, 68, 141, 286, 575, 1152, 1, 11, 30, 67, 140, 285, 574, 1151, 2304, 0, 10, 29, 66, 139, 284, 573, 1150, 2303, 4608, -1, 9, 28, 65, 138, 283, 572, 1149, 2302, 4607, 9216]