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.

A189156 Number of nX4 binary arrays without the pattern 0 0 1 1 diagonally, vertically or horizontally.

Table of values

n a(n)
1 15
2 225
3 3375
4 37976
5 424401
6 4597967
7 48460966
8 507947896
9 5289780940
10 54890361712
11 568739622865
12 5886254888757
13 60885233141712
14 629580674428109
15 6508873299252199
16 67284551942503294
17 695503798053171610

List of values

[15, 225, 3375, 37976, 424401, 4597967, 48460966, 507947896, 5289780940, 54890361712, 568739622865, 5886254888757, 60885233141712, 629580674428109, 6508873299252199, 67284551942503294, 695503798053171610]

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

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