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.

A278304 Number of nX3 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

Table of values

n a(n)
1 16
2 294
3 4558
4 70795
5 986014
6 11557658
7 114457714
8 979384739
9 7403239385
10 50338674135
11 312278286478
12 1787165528059
13 9519474270945
14 47534286373117
15 223836172954845
16 998984714458061
17 4243782348859492
18 17223599427090859

List of values

[16, 294, 4558, 70795, 986014, 11557658, 114457714, 979384739, 7403239385, 50338674135, 312278286478, 1787165528059, 9519474270945, 47534286373117, 223836172954845, 998984714458061, 4243782348859492, 17223599427090859]

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

Content is available under The OEIS End-User License Agreement.