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.

A249986 Number of length 6+1 0..2*n arrays with the sum of the absolute values of adjacent differences equal to 6*n.

Table of values

n a(n)
1 466
2 7138
3 43068
4 168506
5 508902
6 1290856
7 2886016
8 5862924
9 11046810
10 19587334
11 33034276
12 53421174
13 83356910
14 126125244
15 185792296
16 267321976
17 376699362
18 521062026
19 708839308
20 949899538
21 1255705206
22 1639476080
23 2116360272

List of values

[466, 7138, 43068, 168506, 508902, 1290856, 2886016, 5862924, 11046810, 19587334, 33034276, 53421174, 83356910, 126125244, 185792296, 267321976, 376699362, 521062026, 708839308, 949899538, 1255705206, 1639476080, 2116360272]