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.

A268771 Number of nX5 0..2 arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once.

Table of values

n a(n)
1 96
2 248
3 1524
4 10340
5 64112
6 387146
7 2258084
8 12951796
9 73011192
10 406925194
11 2244513800
12 12281806624
13 66734787464
14 360505595710
15 1937557458852
16 10367717536488
17 55261185262316
18 293537189567482
19 1554428843176696

List of values

[96, 248, 1524, 10340, 64112, 387146, 2258084, 12951796, 73011192, 406925194, 2244513800, 12281806624, 66734787464, 360505595710, 1937557458852, 10367717536488, 55261185262316, 293537189567482, 1554428843176696]