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.

A303245 Number of 5Xn 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 16
2 6
3 181
4 61
5 1106
6 1373
7 11111
8 38480
9 221943
10 1162591
11 6612354
12 37797923
13 222063807
14 1285446882
15 7608314073
16 44383042633
17 261786226112
18 1535739151907
19 9031702593457
20 53103496045060
21 312053768598165
22 1835371700840177

List of values

[16, 6, 181, 61, 1106, 1373, 11111, 38480, 221943, 1162591, 6612354, 37797923, 222063807, 1285446882, 7608314073, 44383042633, 261786226112, 1535739151907, 9031702593457, 53103496045060, 312053768598165, 1835371700840177]

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

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