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.

A302377 Number of nX4 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 2
2 46
3 430
4 4640
5 48980
6 514655
7 5421003
8 57068484
9 600825641
10 6325616349
11 66596986535
12 701143904697
13 7381754599676
14 77716287676023
15 818209464051271
16 8614239598434833
17 90692087070581459
18 954820743332757828

List of values

[2, 46, 430, 4640, 48980, 514655, 5421003, 57068484, 600825641, 6325616349, 66596986535, 701143904697, 7381754599676, 77716287676023, 818209464051271, 8614239598434833, 90692087070581459, 954820743332757828]

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

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