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.

A209740 Number of nX4 0..5 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..5 introduced in row major order.

Table of values

n a(n)
1 15
2 700
3 103373
4 20611956
5 4474325828
6 991613495404
7 220845828478730
8 49242046909442868
9 10982471712866182098
10 2449579228342732267816
11 546373088082223670747386
12 121867698385924682716244064

List of values

[15, 700, 103373, 20611956, 4474325828, 991613495404, 220845828478730, 49242046909442868, 10982471712866182098, 2449579228342732267816, 546373088082223670747386, 121867698385924682716244064]

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

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