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.

A331456 Number of regions in an equal-armed cross with arms of length n (see Comments for definition).

Table of values

n a(n)
0 4
1 104
2 568
3 1900
4 4808
5 10180
6 19180
7 33132
8 53628
9 82432
10 121448
11 172948
12 239356
13 323168
14 427272
15 554892
16 709476
17 893772
18 1111588
19 1367292
20 1664604
21 2008240
22 2402560
23 2852532
24 3363280
25 3938712
26 4585568
27 5308720
28 6112736
29 7006068
30 7994412
31 9084788
32 10281812

List of values

[4, 104, 568, 1900, 4808, 10180, 19180, 33132, 53628, 82432, 121448, 172948, 239356, 323168, 427272, 554892, 709476, 893772, 1111588, 1367292, 1664604, 2008240, 2402560, 2852532, 3363280, 3938712, 4585568, 5308720, 6112736, 7006068, 7994412, 9084788, 10281812]