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.

A214113 Number of 0..3 colorings of a 2X(n+1) array circular in the n+1 direction with new values 0..3 introduced in row major order.

Table of values

n a(n)
1 4
2 11
3 111
4 670
5 4994
6 34041
7 241021
8 1678940
9 11777184
10 82366471
11 576786731
12 4036842810
13 28259892574
14 197813269301
15 1384710821241
16 9692921940280
17 67850615007164
18 474953820774531
19 3324678198248551
20 23272743029259350

List of values

[4, 11, 111, 670, 4994, 34041, 241021, 1678940, 11777184, 82366471, 576786731, 4036842810, 28259892574, 197813269301, 1384710821241, 9692921940280, 67850615007164, 474953820774531, 3324678198248551, 23272743029259350]

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

Content is available under The OEIS End-User License Agreement.