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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.

A278433 Number of nX5 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

Table of values

n a(n)
1 456
2 178352
3 67971132
4 23450120081
5 7817299555828
6 2573951428892959
7 803631265741510560
8 228568783548126804702
9 58279844921391047673160
10 13321187192307993333262298
11 2747056699156070175271175528

List of values

[456, 178352, 67971132, 23450120081, 7817299555828, 2573951428892959, 803631265741510560, 228568783548126804702, 58279844921391047673160, 13321187192307993333262298, 2747056699156070175271175528]

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

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