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.

A086114 Number of 4 X n (0,1) matrices such that each row and each column is nondecreasing or nonincreasing.

Table of values

n a(n)
1 8
2 64
3 216
4 528
5 1080
6 1968
7 3304
8 5216
9 7848
10 11360
11 15928
12 21744
13 29016
14 37968
15 48840
16 61888
17 77384
18 95616
19 116888
20 141520
21 169848
22 202224
23 239016
24 280608
25 327400
26 379808
27 438264
28 503216
29 575128
30 654480
31 741768
32 837504
33 942216
34 1056448

List of values

[8, 64, 216, 528, 1080, 1968, 3304, 5216, 7848, 11360, 15928, 21744, 29016, 37968, 48840, 61888, 77384, 95616, 116888, 141520, 169848, 202224, 239016, 280608, 327400, 379808, 438264, 503216, 575128, 654480, 741768, 837504, 942216, 1056448]