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.

A204074 Number of (n+1)X7 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 23438
2 1944977
3 173848010
4 15960507749
5 1480470688070
6 137884925726873
7 12862680257580962
8 1200667125506097389
9 112104534764514944606
10 10468081339649563612769
11 977525613860679565008506

List of values

[23438, 1944977, 173848010, 15960507749, 1480470688070, 137884925726873, 12862680257580962, 1200667125506097389, 112104534764514944606, 10468081339649563612769, 977525613860679565008506]

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

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