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.

A204644 Number of (n+1) X 2 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively.

Table of values

n a(n)
1 8
2 16
3 28
4 48
5 80
6 132
7 216
8 352
9 572
10 928
11 1504
12 2436
13 3944
14 6384
15 10332
16 16720
17 27056
18 43780
19 70840
20 114624
21 185468
22 300096
23 485568
24 785668
25 1271240
26 2056912
27 3328156
28 5385072
29 8713232
30 14098308
31 22811544
32 36909856
33 59721404
34 96631264
35 156352672
36 252983940

List of values

[8, 16, 28, 48, 80, 132, 216, 352, 572, 928, 1504, 2436, 3944, 6384, 10332, 16720, 27056, 43780, 70840, 114624, 185468, 300096, 485568, 785668, 1271240, 2056912, 3328156, 5385072, 8713232, 14098308, 22811544, 36909856, 59721404, 96631264, 156352672, 252983940]