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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.

A372118 Square array A(n, k) = ((k+2)^(n+2) - 2 * (k+1)^(n+2) + k^(n+2))/2 for k, n >= 0 read by ascending antidiagonals.

Table of values

n a(n)
0 1
1 3
2 1
3 7
4 6
5 1
6 15
7 25
8 9
9 1
10 31
11 90
12 55
13 12
14 1
15 63
16 301
17 285
18 97
19 15
20 1
21 127
22 966
23 1351
24 660
25 151
26 18
27 1
28 255
29 3025
30 6069
31 4081
32 1275
33 217
34 21
35 1
36 511
37 9330
38 26335
39 23772
40 9751
41 2190
42 295
43 24
44 1
45 1023
46 28501
47 111645
48 133057
49 70035
50 19981
51 3465
52 385
53 27
54 1

List of values

[1, 3, 1, 7, 6, 1, 15, 25, 9, 1, 31, 90, 55, 12, 1, 63, 301, 285, 97, 15, 1, 127, 966, 1351, 660, 151, 18, 1, 255, 3025, 6069, 4081, 1275, 217, 21, 1, 511, 9330, 26335, 23772, 9751, 2190, 295, 24, 1, 1023, 28501, 111645, 133057, 70035, 19981, 3465, 385, 27, 1]