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.

A223833 Number of n X 3 0..1 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.

Table of values

n a(n)
1 7
2 22
3 48
4 89
5 149
6 232
7 342
8 483
9 659
10 874
11 1132
12 1437
13 1793
14 2204
15 2674
16 3207
17 3807
18 4478
19 5224
20 6049
21 6957
22 7952
23 9038
24 10219
25 11499
26 12882
27 14372
28 15973
29 17689
30 19524
31 21482
32 23567
33 25783
34 28134
35 30624
36 33257
37 36037
38 38968
39 42054
40 45299
41 48707
42 52282

List of values

[7, 22, 48, 89, 149, 232, 342, 483, 659, 874, 1132, 1437, 1793, 2204, 2674, 3207, 3807, 4478, 5224, 6049, 6957, 7952, 9038, 10219, 11499, 12882, 14372, 15973, 17689, 19524, 21482, 23567, 25783, 28134, 30624, 33257, 36037, 38968, 42054, 45299, 48707, 52282]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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