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.

A269136 Number of n X n 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three no more than once.

Table of values

n a(n)
1 4
2 148
3 18556
4 8317996
5 14197016484
6 95884587957284
7 2621894498331024092
8 294433751149574057834796
9 137064853562490916405823252564
10 266206369700280385363973380215109284

List of values

[4, 148, 18556, 8317996, 14197016484, 95884587957284, 2621894498331024092, 294433751149574057834796, 137064853562490916405823252564, 266206369700280385363973380215109284]

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

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