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.

A250683 Number of (7+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

Table of values

n a(n)
1 1005121
2 32230991
3 923242475
4 23739860017
5 542694735983
6 11161659240791
7 210335029800118
8 3682042848693451
9 60641209583699449
10 948745856029597670
11 14215547255379464689
12 205309451238359552540
13 2873492420605039758875

List of values

[1005121, 32230991, 923242475, 23739860017, 542694735983, 11161659240791, 210335029800118, 3682042848693451, 60641209583699449, 948745856029597670, 14215547255379464689, 205309451238359552540, 2873492420605039758875]

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

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