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.

A185470 Number of (n+2)X4 0..2 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

Table of values

n a(n)
1 4594
2 21834
3 76309
4 225672
5 594798
6 1433903
7 3212372
8 6763143
9 13496424
10 25706057
11 46997040
12 82868632
13 141494158
14 234746166
15 379524035
16 599450565
17 927014574
18 1406248164
19 2096040183
20 3074201592
21 4442414038
22 6332210033

List of values

[4594, 21834, 76309, 225672, 594798, 1433903, 3212372, 6763143, 13496424, 25706057, 46997040, 82868632, 141494158, 234746166, 379524035, 599450565, 927014574, 1406248164, 2096040183, 3074201592, 4442414038, 6332210033]