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.

A188515 Number of n X n binary arrays without the pattern 1 1 0 diagonally, vertically or horizontally.

Table of values

n a(n)
1 2
2 16
3 229
4 6760
5 342240
6 32470385
7 5593606875
8 1811059364020
9 1103649329789000
10 1283030748540574429
11 2858394905740312536937
12 12271770983630246007920447
13 101822638806356395388304091003
14 1636793382556126237888634491914956

List of values

[2, 16, 229, 6760, 342240, 32470385, 5593606875, 1811059364020, 1103649329789000, 1283030748540574429, 2858394905740312536937, 12271770983630246007920447, 101822638806356395388304091003, 1636793382556126237888634491914956]

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

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