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.

A204072 Number of (n+1)X5 0..2 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..2 introduced in row major order.

Table of values

n a(n)
1 938
2 25277
3 706454
4 19934369
5 563880962
6 15960507749
7 451830740558
8 12791537916233
9 362138172985082
10 10252434870775373
11 290255213590923014
12 8217375177569472881
13 232640981675680448882
14 6586267002045127095221

List of values

[938, 25277, 706454, 19934369, 563880962, 15960507749, 451830740558, 12791537916233, 362138172985082, 10252434870775373, 290255213590923014, 8217375177569472881, 232640981675680448882, 6586267002045127095221]

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

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