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.

A268910 Number of 7Xn 0..2 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling two exactly once.

Table of values

n a(n)
1 0
2 159744
3 5038848
4 154472184
5 4513169016
6 129834259704
7 3679171151832
8 103095286509168
9 2860978283523432
10 78747017051741472
11 2152203067541169000
12 58462727175138511872
13 1579670961301113123600
14 42485047384554878027688

List of values

[0, 159744, 5038848, 154472184, 4513169016, 129834259704, 3679171151832, 103095286509168, 2860978283523432, 78747017051741472, 2152203067541169000, 58462727175138511872, 1579670961301113123600, 42485047384554878027688]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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