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.

A212939 Number of nX4 0..3 arrays with no column j greater than or equal to than column j-1 in all rows.

Table of values

n a(n)
1 1
2 10311
3 6470341
4 2509306671
5 801439905901
6 232665778445031
7 64146409058631061
8 17171607076234160991
9 4517476409302006541821
10 1176061942859281821190551
11 304219071898389511351734181

List of values

[1, 10311, 6470341, 2509306671, 801439905901, 232665778445031, 64146409058631061, 17171607076234160991, 4517476409302006541821, 1176061942859281821190551, 304219071898389511351734181]

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

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