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.

A209185 Number of words, either empty or beginning with the first letter of the cyclic 6-ary alphabet, where each letter of the alphabet occurs n times and letters of neighboring word positions are equal or neighbors in the alphabet.

Table of values

n a(n)
0 1
1 2
2 202
3 53768
4 19341130
5 8151741752
6 3795394507240
7 1892725627422240
8 992594962274742090
9 540969426319412656280
10 303934170379321788972952
11 175019302819674622982714912
12 102858166922334018149414066152
13 61493440878115135100772134725088

List of values

[1, 2, 202, 53768, 19341130, 8151741752, 3795394507240, 1892725627422240, 992594962274742090, 540969426319412656280, 303934170379321788972952, 175019302819674622982714912, 102858166922334018149414066152, 61493440878115135100772134725088]