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.

A269204 Number of 4Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three no more than once.

Table of values

n a(n)
1 256
2 15540
3 471492
4 15289548
5 463790340
6 13753913556
7 399104835612
8 11402099212308
9 321701652077076
10 8985658235129964
11 248904744378939924
12 6846738391062856596
13 187219797100389992412
14 5093241917191742737620

List of values

[256, 15540, 471492, 15289548, 463790340, 13753913556, 399104835612, 11402099212308, 321701652077076, 8985658235129964, 248904744378939924, 6846738391062856596, 187219797100389992412, 5093241917191742737620]

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

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