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.

A183823 1/256 the number of (n+1)X5 0..3 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.

Table of values

n a(n)
1 3375
2 2377341
3 1661285961
4 1163575148283
5 814479338538099
6 570213177028325955
7 399185865558804067443
8 279459103250217225077847

List of values

[3375, 2377341, 1661285961, 1163575148283, 814479338538099, 570213177028325955, 399185865558804067443, 279459103250217225077847]

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

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