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.

A338996 Numbers of squares and rectangles of all sizes in 3*n*(n+1)/2-ominoes in form of three-quarters of Aztec diamonds.

Table of values

n a(n)
0 0
1 5
2 27
3 85
4 205
5 420
6 770
7 1302
8 2070
9 3135
10 4565
11 6435
12 8827
13 11830
14 15540
15 20060
16 25500
17 31977
18 39615
19 48545
20 58905
21 70840
22 84502
23 100050
24 117650
25 137475
26 159705
27 184527
28 212135
29 242730
30 276520

List of values

[0, 5, 27, 85, 205, 420, 770, 1302, 2070, 3135, 4565, 6435, 8827, 11830, 15540, 20060, 25500, 31977, 39615, 48545, 58905, 70840, 84502, 100050, 117650, 137475, 159705, 184527, 212135, 242730, 276520]