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.

A231941 Number of 2 X n 0..3 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.

Table of values

n a(n)
1 16
2 84
3 668
4 5070
5 42104
6 326010
7 2511252
8 19430715
9 152135920
10 1190465282
11 9289762532
12 72404777123
13 564819519982
14 4409093385085
15 34418864675001
16 268626308705377
17 2096420912100320
18 16362151427663928
19 127710770440282286

List of values

[16, 84, 668, 5070, 42104, 326010, 2511252, 19430715, 152135920, 1190465282, 9289762532, 72404777123, 564819519982, 4409093385085, 34418864675001, 268626308705377, 2096420912100320, 16362151427663928, 127710770440282286]

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

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