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.

A224142 Number of n X 4 0..1 arrays with rows and antidiagonals unimodal and columns nondecreasing.

Table of values

n a(n)
1 11
2 46
3 124
4 272
5 526
6 930
7 1536
8 2404
9 3602
10 5206
11 7300
12 9976
13 13334
14 17482
15 22536
16 28620
17 35866
18 44414
19 54412
20 66016
21 79390
22 94706
23 112144
24 131892
25 154146
26 179110
27 206996
28 238024
29 272422
30 310426
31 352280
32 398236
33 448554
34 503502
35 563356
36 628400

List of values

[11, 46, 124, 272, 526, 930, 1536, 2404, 3602, 5206, 7300, 9976, 13334, 17482, 22536, 28620, 35866, 44414, 54412, 66016, 79390, 94706, 112144, 131892, 154146, 179110, 206996, 238024, 272422, 310426, 352280, 398236, 448554, 503502, 563356, 628400]

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

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