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.

A269219 Number of 6Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.

Table of values

n a(n)
1 0
2 889056
3 118872576
4 17118725376
5 2267772823680
6 292321215814512
7 36713945487331392
8 4528086446983948224
9 550465224463202188320
10 66156064863501806179776
11 7876627077577027391888640

List of values

[0, 889056, 118872576, 17118725376, 2267772823680, 292321215814512, 36713945487331392, 4528086446983948224, 550465224463202188320, 66156064863501806179776, 7876627077577027391888640]

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

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