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.

A208711 Number of 4Xn 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

n a(n)
1 8
2 128
3 1372
4 16084
5 185344
6 2142580
7 24754628
8 286034292
9 3305009328
10 38188137788
11 441249345280
12 5098468022268
13 58910854227068
14 680692462409636
15 7865141904908344
16 90878716312611076
17 1050068921631026592

List of values

[8, 128, 1372, 16084, 185344, 2142580, 24754628, 286034292, 3305009328, 38188137788, 441249345280, 5098468022268, 58910854227068, 680692462409636, 7865141904908344, 90878716312611076, 1050068921631026592]

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

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