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.

A220033 Number of 3 X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..1 3 X n array.

Table of values

n a(n)
1 4
2 6
3 10
4 19
5 30
6 42
7 55
8 69
9 84
10 100
11 117
12 135
13 154
14 174
15 195
16 217
17 240
18 264
19 289
20 315
21 342
22 370
23 399
24 429
25 460
26 492
27 525
28 559
29 594
30 630
31 667
32 705
33 744
34 784
35 825
36 867
37 910
38 954
39 999
40 1045
41 1092
42 1140
43 1189
44 1239
45 1290
46 1342
47 1395
48 1449
49 1504
50 1560
51 1617
52 1675

List of values

[4, 6, 10, 19, 30, 42, 55, 69, 84, 100, 117, 135, 154, 174, 195, 217, 240, 264, 289, 315, 342, 370, 399, 429, 460, 492, 525, 559, 594, 630, 667, 705, 744, 784, 825, 867, 910, 954, 999, 1045, 1092, 1140, 1189, 1239, 1290, 1342, 1395, 1449, 1504, 1560, 1617, 1675]